IIT_NEET IMP MCQs 6th to 9th classes bits test 5,6 download pdf

 IIT_NEET IMP MCQs 6th to 9th classes bits test 5,6 download pdf 

7TH BIO....TEST 1

52. A) Root hairs absorb water and minerals from the soil.

53. D) Right atrium contracts, allowing blood to flow into the right ventricle.

54. C) Mineral salts move into plants through passive absorption along the concentration gradient.

55. B) Plasma is the fluid part of blood where blood cells are suspended.

56. C) Blood circulates across the body through blood vessels.

57. A) Thrombocytes aid in blood clotting.

58. B) Xylem and phloem form vascular tissue in plants.

59. D) Stethoscope is used by doctors to check heart sounds.

60. C) Your heart is approximately the size of your fist.

61. B) Transpiration process aids in water and mineral transport by creating a suction pull.

62. D) i) Translocation occurs through ATP energy. iii) Sugar loaded into sieve tubes using ATP. 

63. A) i) Stomatal transpiration, ii) Lenticular transpiration, iii) Cuticular transpiration.

64. A) Lungs → Left atrium → Left ventricle → Aorta → Body parts.

65. B) Blood pressure in the veins is low.

66. D) The two upper chambers of the mammalian heart are auricles.

67. A) WBCs are also known as Leucocytes.

68. C) RBCs are Erythrocytes.

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7TH BIO TEST 2

52. D) Pericarp is the ovarian wall that becomes the fruit wall.

53. A) Seed dormancy is the condition where dry seeds remain alive but inactive for long periods.

54. B) Anther is the swollen tip of the stamen of a flower.

55. C) The female gamete or egg cell is formed inside the ovule.

56. D) Fertilization occurs in a plant when the male gamete fuses with the female gamete.

57. B) The part of the branch buried in the soil which develops roots and grows into a new plant is called layering.

58. A) Budding is the process in which an outgrowth (bud) forms on the body of a parent organism, detaches, and becomes a new organism.

59. C) Both regeneration and budding are seen in Hydra.

60. B) Sweet potato roots produce adventitious buds that develop into new plants.

61. D) Papaya is an incomplete flower.

62. B) Clones are morphologically and genetically similar individuals that are produced as a result of asexual reproduction.

63. D) Spore formation occurs in bacteria, fungi, and ferns.

64. A) Only iii - Sweet potato is vegetatively propagated with the help of its underground stem.

65. C) Fertilization involves the fusion of male and female gametes.

66. A) Unisexual flower is a flower that bears either male or female parts.

67. D) Reproduction refers to the ability of a living organism to produce new living beings.

68. B) Asexual reproduction is the ability of a living organism to produce new living beings without involving the fusion of gametes.

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8TH TEST 1 BIO  IMP Q/As

52. D) Changes during puberty in females are caused by sex hormones.

53. C) Puberty lasts till nineteen years.

54. A) In human beings, the chromosome composition of a female destined zygote is 44+XX.

55. D) Girls overtake boys in height during adolescence.

56. B) Goitre results from an endocrine disorder.

57. C) Endocrine glands put their secretions directly into the blood.

58. A) The master gland in the human body is the pituitary gland.

59. C) Glucagon raises the blood sugar level.

60. B) The deficiency of parathormone leads to a disease called tetany.

61. C) Adrenal gland is located at the top of each kidney.

62. D) Growth of pubic hair, growth of facial hair, and bones and muscles development are secondary sexual characteristic features of a boy.

63. D) During menopause, no menstruation occurs, no maturation of new follicles happens, and the ovaries stop the secretion of estrogen.

64. D) The pituitary gland controls the thyroid gland, hypothalamus, and pineal body.

65. C) Goitre is caused due to deficiency of thyroxine hormone.

66. A) RTI (Reproductive Tract Infections) causes enlarged larynx.

67. D) Nisseria gonorrhoeae is the bacteria that cause gonorrhoea disease.

68. B) Adam’s apple is the enlarged larynx.

8TH TEST  BIO 2 IMP Q/As

A) Harrow is an implement used to remove weeds.

C) A farmer sows beans in his fields after harvesting a crop of wheat. The agricultural practice he is following is crop rotation.

B) The agricultural tool used to level the field is a leveller.

D) Excessive irrigation causes salinisation of soil.

B) Cutting of mature crops with a sickle is called harvesting.

C) Rearing of silkworms to obtain silk is called sericulture.

B) Animals used in agriculture and for transport are called draught animals.

A) Keeping land uncultivated for some time so as to replenish the lost nutrients is called field fallow.

D) The last step in crop production is crop harvesting.

C) The common weed which grows along with every crop is Amaranthus.

B) The correct statements about the advantages of using manure are: i) Manure provides humus to the soil which improves physical and chemical properties of soil. iii) It improves water holding capacity of soil.

D) Traditional methods of irrigation practices include: i) Chain pump ii) Rahat iv) Dhekli.

A) Food production can be increased to meet the demand of an increasing population by practicing efficient land management and development.

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9TH BIO TEST 1 IMP QS

C) Organisms that feed upon decaying matter are called saprotrophs.

B) Nutrition is the life process classified as autotrophic in some organisms and heterotrophic in others.

A) The levels in classification are called taxa.

D) In a hierarchical scheme of taxonomic classification, the grouping just below order is family.

C) Plants producing naked seeds belong to Gymnosperms.

A) Bryophytes differ from algae in having archegonium.

B) Circulatory system in cockroach is open.

D) Pneumatic bones are found in birds.

D) Binomial system refers to one generic and one specific name.

A) In arthropods, coelom is filled with blood.

D) Cuttlefish, Octopus, Snails, and Slugs belong to phylum Mollusca.

C) The correct statements about the characteristic features of mammals are: i) They are the most evolved animals of the animal kingdom. iii) They are endotherms. They maintain a fixed body temperature. iv) The females have milk-producing glands called mammary glands.

A) The characteristic features of class Osteichthyes are: i) Bony fishes have a skeleton made of bones. ii) Gills are covered by an operculum. iv) Mouth is terminal in position.

C) Agaricus campestris refers to button mushroom.

D) Pteridophytes are the first terrestrial vascular plants.

B) Polyembryony refers to the formation of more than one embryo.

A) Cyclostomata are ectoparasites.

9TH BIO TEST 2 IMP QS

D) Artificial breeding is more advantageous for cattle breeding.

B) Silver revolution is related to milk production.

B) The principal cereal crop in India is rice.

A) Foot and mouth disease is a viral disease of cattle.

C) Growing two or more crops in definite row patterns is known as mixed cropping.

C) The technique of growing two or more different crops together in the same field is known as intercropping.

B) Mullets, bhetki, and pearl spots are examples of freshwater fish.

D) Biological control of agricultural pests, unlike chemical control, is self-perpetuating.

D) Bordeaux mixture was the first commercial pesticide.

A) Pasturage is related to cattle.

B) The incorrect statement about the prevention of cattle diseases is that no proper cleanliness should be maintained in cattle sheds.

A) Materials of biological origin commonly used to maintain and improve soil fertility are green manures and biofertilizers.

B) The correct sentences about manure are: (i) Manure contains large quantities of organic matter and small quantities of nutrients. (ii) Manure increases the water holding capacity of sandy soil.

6TH BIO AND CHEMISTRY 

52. The movement of the elbow is  

   A) Rotates completely  

   B) Bends in one direction only  

   C) In two directions  

   D) Does not move at all  

   **Correct Answer: B) Bends in one direction only**

53. The movement of upper arm is  

   A) In two directions  

   B) Rotates completely  

   C) Bends only in one direction  

   D) Does not move at all  

   **Correct Answer: B) Rotates completely**

54. Exoskeleton is the skeleton which is present  

   A) Outside the body of an organism  

   B) Inside the body of an organism  

   C) Only in insects  

   D) Only in invertebrates  

   **Correct Answer: A) Outside the body of an organism**

55. The upper arm consists of a long bone called ______.  

   A) Fibula B) Tibia  

   C) Femur D) Humerus  

   **Correct Answer: D) Humerus**

56. Type of joint which helps in rotating the head completely and turn in side to side directions is _______.  

   A) Gliding joint B) Hip joint  

   C) Hinge joint D) Pivot joint  

   **Correct Answer: D) Pivot joint**

57. Which property of muscles is responsible for movement of bones?  

   A) Contraction only  

   B) Contraction and relaxation  

   C) Hardness and rigidity  

   D) Pushing and pulling  

   **Correct Answer: B) Contraction and relaxation**

58. The hinge joint allows the movement in  

   A) All directions  

   B) Two planes only  

   C) One plane only  

   D) Depends on where the joint is located in the body.  

   **Correct Answer: C) One plane only**

59. Bristle-like projections in the earthworm which help in movement are called  

   A) Cilia B) Setae  

   C) Clitellum D) Prostomium  

   **Correct Answer: B) Setae**

60. The snail has a _______ which is a part of its belly that helps in locomotion.  

   A) Muscular foot B) Pneumostome  

   C) Mantle D) Lower tentacles  

   **Correct Answer: A) Muscular foot**

61. Movement of snake is called _____.  

   A) Swimming B) Running  

   C) Crawling D) Slithering  

   **Correct Answer: D) Slithering**

**SECTION-II: (A.A.T)**

62. Select the incorrect statement from the following.  

    i) Femur is the thigh bone.  

    ii) Humerus is the bone present in the lower arm.  

    iii) Cartilage is present in the upper part of ear.  

    iv) Vertebral column is formed by 33 serially arranged vertebrae.  

   A) Only i B) Only ii  

   C) Only iii D) Only iv  

   **Correct Answer: B) Only ii (Humerus is not the bone present in the lower arm)**

63. Find out the perfect joints from the following.  

    i) Pivot joints  

    ii) Hinge joints  

    iii) Ball and socket joints  

    iv) Gliding joints  

   A) i, iii B) i, ii  

   C) ii, iii D) i, ii, iii, iv  

   **Correct Answer: D) i, ii, iii, iv (Pivot joints, Hinge joints, Ball and socket joints, Gliding joints)**

64. Identify the correct statements about the functions of the skull.  

    i) The most important function of the skull is to protect the brain.  

    ii) Skull bears jaws which helps us to cut and chew the food.  

    iii) Skull protects and supports the special sense organs i.e., stomach, kidneys, Heart etc.,  

   A) Only i B) Only iii  

   C) Only ii D) i, ii  

  Correct Answer: D) i, ii (The most important function of the skull is to protect the brain. Skull does not protect and support special sense organs like stomach, kidneys, Heart, etc.)

SECTION-III: (M.M.T)

Column - I        Column - II  

65. Fixed joints            A) Ball and socket joint  

66. Sting ray                B) Help the fish to move in water  

67. Streamlined body  C) Cartilaginous fish  

68. Shoulder joint         D) Skull bones of an adult human being  

Correct Answers

65. A) Ball and socket joint  

66. C) Cartilaginous fish  

67. B) Help the fish to move in water  

68. D) Skull bones of an adult human being

6th.. IMP Bio and chemistry

52. Who proved that water can be prepared by igniting two volumes of hydrogen and one volume of oxygen?

   - Henry Cavendish demonstrated the preparation of water by igniting hydrogen and oxygen.

53. Excessive rain causes

   - Excessive rain leads to floods.

54. Water from the wet clothes disappears due to

   - Water from wet clothes evaporates.

55. The constituents of water can be separated by

   - The constituents of water can be separated by electrolysis.

56. Ice floats on water because

   - Ice floats on water because it is lighter than water.

57. The elements in water are

   - The elements in water are hydrogen and oxygen.

58. The water in the thermal plants is cooled by

   - The water in thermal plants is cooled by cooling towers.

59. _______ is known as the universal solvent.

   - Water is known as the universal solvent.

60. The relative density of water is

   - The relative density of water is 1 gm/ml.

61. We should save every drop of water as it is

   - We should save every drop of water as it is the essence of life.

62. Water is used for

   - Water is used for making syrups, soft drinks, and drinking purposes.

63. The increasing scarcity of fresh water is due to

   - The increasing scarcity of fresh water is due to population growth, pollution, and industrial development.

64. Water is polluted with

   - Water is polluted with chemicals, germs, and bacteria.

65. Potable water

   - Potable water is water fit for human consumption that is clear and neat.

66. Water cycle

   - The water cycle involves evaporation, condensation, and precipitation as rain.

67. Dissolved chlorine

   - Dissolved chlorine kills germs and bacteria in water.

68. Water is essential for

   - Water is essential for running hydroelectric power plants.

Chemistry... 6th IMP Q/As

Here are the questions along with the correct answers based on the key you provided:

35. Burning of petrol is an example of ________ change

   - Correct Answer: C) Fast

36. Identify which is irreversible change

   - Correct Answer: B) The ageing of plants

37. Zinc oxide on heating changes to____ colour

   - Correct Answer: A) Pink

38. Which of the following is an example of chemical change?

   - Correct Answer: B) Cooking of food

39. Production of sound when two materials are hit together is a:

   - Correct Answer: B) Physical change

40. Glowing of an electrical bulb by passing electricity through it is an example of

   - Correct Answer: A) Reversible change

41. Dry ice (solid CO2) is sublimed at room temperature

   - Correct Answer: C) Irreversible change

42. Identify which one is true:

   - Correct Answer: A, B, C, D (All of the above)

43. Which of the following is / are periodic change

   - Correct Answer: A, B, C

44. Which of the following is / are a physical change?

   - Correct Answer: A, B

45. The farmers spray chemicals on vegetables and fruits to kill insects. This is example of:

   - Correct Answer: D) Physical change

46. Identify the desirable and undesirable changes from the following:

   - Correct Answer: A) i- Desirable change, ii - Undesirable change

47. Flooding of rivers in rainy season is an:

   - Correct Answer: C) Desirable change

48. Physical change | Correct Answer: D) Respiration by plants and animals

49. Chemical change | Correct Answer: C) Rusting of iron

50. Periodic change | Correct Answer: B) Crystallisation of salts from their solution

51. Non-periodic change | Correct Answer: A) Beating of heart....

......Chemistry 6th imp .....

Here are the questions along with the correct answers based on the key you provided:

35. Name of element Ni is

   - Correct Answer: C) Nickel

36. The symbols of lead and mercury are respectively

   - Correct Answer: B) Pb, Hg

37. Which of the following forms a monoatomic cation?

   - Correct Answer: A) Na

38. The symbol for the element Astatine is :

   - Correct Answer: B) At

39. The valency of ferric is :

   - Correct Answer: B) 3

40. The latin name of Tungsten is

   - Correct Answer: A) Wolfram

41. The element which exhibit variable valency ?

   - Correct Answer: C) Fe

42. The elements named after the scientist name is / are ____.

   - Correct Answer: A, B, C, D (All of the above)

43. Which of the following element has both bivalent and tetra valent?

   - Correct Answer: A, B, C (All of the above)

44. Which of the following element has both trivalent and pentavalent?

   - Correct Answer: A, B (Antimony, Arsenic)

45. Higher oxidation state of Manganese is :

   - Correct Answer: D) +7

46. Higher oxidation state of Osmium is

   - Correct Answer: A) +8

47. Valency of Gallium is :

   - Correct Answer: C) 3

48. Sodium | Correct Answer: D) Natrium

49. Silver | Correct Answer: C) Argentum

50. Tin | Correct Answer: B) Stannum

51. Lead | Correct Answer: A) Plumbum