InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
One of the following reproduces by forming spores. This is :A. FeamB. PlanariaC. SpirogyraD. Potato |
| Answer» Correct Answer - A | |
| 52. |
(a) What would be the ratio of chromosomes number betweeen an egg and its zygote ? (b) Distinguish between a gamete and a zygote. |
| Answer» Correct Answer - (a) 1:2 (b) Gamete represents the sex cell or germ cell in sexual reproduction and it is of two types : male gamete and female gamete ; Zygote is the product of fertilisation in which a male gamet and a female gamete fuse with each other | |
| 53. |
Which among the following statements are true for unisexual flowers? (i) They possess both stamen and pistil. (ii) They possess either stamen or pistil. (iii) They exhibit cross pollination. (iv) Unisexual flowers possessing only stamens cannot produce fruits.A. (i) and (iv)B. (ii),(iii) and (iv)C. (ii) and (iii)D. (i), (ii) and (iv) |
| Answer» Correct Answer - B | |
| 54. |
The figure given alongside shows the human male reproductive organs. Which structures make sperms and seminal fluid ? A. V makes sperms and X makes seminal fluidB. W makes sperms and Y makes seminal fluidC. X makes sperms and W makes seminal fluidD. Y makes sperms and V makes seminal fluid |
| Answer» Correct Answer - D | |
| 55. |
Which of the following statements are true for flowers? (i) Flowers are always bisexual (ii) They are the sexual reproductive organs (iii) They are produced in all groups of plants (iv) After fertilisation they give rise to fruitsA. (i) and (iv)B. (ii) and (iii)C. (i) and (iii)D. (ii) and (iv) |
| Answer» Correct Answer - D | |
| 56. |
One of the following is not a part of the human male reproductive system. This isA. testisB. oviductC. seminal vesicleD. prostrate gland |
| Answer» Correct Answer - B | |
| 57. |
In what ways is fertilisation in a plant: (a) similar to fertilisation in a human? (b) different from fertilisation in a human ? |
| Answer» Correct Answer - (a) Similarities : (i) The fusion of gametes occures in the female part in a plant as well as in a human (ii) A zygote is produces which develops into an embryo in a plant in a as well as in a human (b) Differences : (i) There is pollination in a plant but copulatiojn (or matting) in a human to bring the male and female gametes together (ii) There is no equivalent in a plant to the oviducts in a human (iii) In a human, the male gametes (sperms ) swim but in a plant self-fertilisation is possible (The fertilisation of a plant with its own pollen is called self-fertilisation) | |
| 58. |
One of the following is a surgical method which prevents the sperms from reaching the ovum and pregnancy does not occur . This method is :A. IUCDB. vasectomyC. condomD. tubectomy |
| Answer» Correct Answer - B | |
| 59. |
What is the other name of sex cells? |
| Answer» Correct Answer - Gametes | |
| 60. |
Can you think of reasons why more complex organisms cannot give rise to new individuals through regeneration? |
| Answer» Higher complex organisms cannot give rise to new individuals through regeneration because complex organisms have organ-system level of organization. All the organ systems of their body work together as an interconnected unit. They can regenerate their lost body parts such as skin, muscles, blood, etc. However, they cannot give rise to new individuals through regeneration. | |
| 61. |
There are four tiny organisms A,B, C and D. The organism A is a parasitic protozoan which causes a disease known as kala-azar. The organism B is microscopia single-called animl which causes malaria disease in human beings. The organism C is a unicellular animal which can change its body shape accroding to need, it has no fixed shapt. The organism D is also a unicellular animal which i slopper-shaped having a large number of tiny hair all around its body. (a) Name the organisms A, B, C and D (b) Name one characteristic body feature of organism A (c) Name the insect which carreis organism B and transmits if from on person to another (d) What name is given to the asexual method of reproduction of (i) organism A, and (ii) organism B? (e) Where do organism C and D live? |
| Answer» Correct Answer - (a) A is Lesihamnia ,B is Plasmodium , C is Amoeba and D is Paramecium (b) Organism A (Leishmania) has a whip-like structure called flagellum at its one end (c) Female Anopheles mosquito (d) (i) Binary fission (ii) Multiple fission (e) Y is multicellular whereas X is unicellular | |
| 62. |
Multiple fission occurs in one of the following . This is :A. bread mouldB. kala-azar parasiteC. flatwormD. malaria parasite |
| Answer» Correct Answer - D | |
| 63. |
The micro-organism which reproduces by multiple fission is the one which causes the disease the disease known as :A. Kala-azarB. marasmusC. malariaD. amoebiasis |
| Answer» Correct Answer - C | |
| 64. |
Binary fission descibes the type of reproduction wher the organism divides to from :A. many sporesB. two daughtersC. many budsD. two hyphae |
| Answer» Correct Answer - B | |
| 65. |
An organism having a whip-like structrue at one which reproduces by the process of binary fission is :A. HydraB. ParameciumC. LeishmaniaD. Plasmodium |
| Answer» Correct Answer - C | |
| 66. |
(a) What is gestation period ? How much is the gestation period in humans ? (b) Name one method of contraception which also protects against sexually transmitted diseases. (c) Name one sexually transmitted disease for which no definite cure has been found so far. What is the causative organsim of this disease? |
| Answer» Correct Answer - (b) Use of condom (c) AIDS Virus (HIV) | |
| 67. |
(a) What is mean by the term fission as used in biology? (b) How does binary fission differ from multiple fission (c) Name oce organism which reproduces by binary fisison and another which reproduces by multiple fission. (d) State wheter the above named organisms ae animals or plants. |
| Answer» Correct Answer - (c) Binary fission : Amoeba; Multiple fission : Plasmodium (d) Microscopic animals | |
| 68. |
The factors responsible for the rapid spreading of beard mould on slices bread are: (i) Presence of large number of spores in air (ii) Presence of large number of thread-like branched hyphae (iii) Presence of mositrue and and nutrients (iv) formation of round shaped sporangiaA. (i) and (ii)B. (i) and (iv)C. (i) and (ii)D. (ii) and (iv) |
| Answer» Correct Answer - A | |
| 69. |
If a woman is using a copper-T, will it help in protecting her from sexually transmitted diseases? |
| Answer» No, because copper-T, will not prevent contact body fluids. Thus, it will ot protect her from sexually transmitted disease | |
| 70. |
(a) The yeas cells fall to multiply in water but they multiply rapidly in sugar solution. Give one reason for it. (b) Why dies bread mould grow profusely on a moist slice of breas but not on a dry slice of bread? |
| Answer» Correct Answer - (a) Water does not provide any energy to yeast cells So, Yeast cells fail to multiplying in water due to inadequate energy in its cells. Sugar provides energy to yeast cells to cary out reproduction by multiplying rapidly (b) Moisture is necessary for the growth of bread mould. The moist slice of bred provides both moisture and nutrients but no moisture. So in the absence of moistrue, bread mould does not grow on the dry slice or bread. | |
| 71. |
(a) What type of plants reproduce by sexual reproduction method ? (b) What is seed ? What are the part of seed ? Exaplain with the help of a labelled diagram. |
| Answer» Correct Answer - (a) Flowering plants | |
| 72. |
One of the following des not reproduces by spore formation method. This is :A. Rhizopus fungusB. Penicillium fungusC. Yeast fungusD. Mucor fungus |
| Answer» Correct Answer - C | |
| 73. |
Which of the following is the correct sequence of events of sexual reproduction in a flower?A. pollination , fertilisation, seed , embryoB. seed, embryo, fertilisation, pollinationC. pollination, fertilisation, embryo, seedD. embryo , seed, pollination, fertilisation |
| Answer» Correct Answer - C | |
| 74. |
The advantages that internal fertilisation has over external fertilisation is that in internal fertilisation :A. a new off-springs are exactly like the parentB. production of large numbers of gametes in unnecessaryC. copulation and fusion of gametes is passiveD. fewer individuals are produced |
| Answer» Correct Answer - D | |
| 75. |
Which of the following is not a part of the female reproductive system in human being?A. ovaryB. uterusC. vas deferensD. oviducts |
| Answer» Correct Answer - C | |
| 76. |
The correct sequence of organs in the male reproductive system for transport of sperms isA. testis `to` vas deferens `to` urethraB. testis `to` ureter `to` urethraC. testis `to` urethra `to` ureterD. testis `to` vas deferens `to` ureter |
| Answer» Correct Answer - A | |
| 77. |
(a) Fertilisation in humans can occur only once in a month. Why ? (b) What is the scientific name of (i) womb, and (ii) birth canal ? |
| Answer» Correct Answer - (a) Because ovulation takes place once every month, that is an egg is released once every month by ovary | |
| 78. |
The diagram shows female reproductive system. Name the parts labelled A to D. (a) In which part do the sperms enter ? (b) Which part releases the egg ? (c) In which part does fertilisation take place ? (d) In which part does the foetus develop ? |
| Answer» Correct Answer - (a) A is oviduct (or fallopan tube) ; B is ovary ; C is uterus (or womb) ; D is vagina (a) Part D (vagina) (b) Part B (ovary) (c) Part A (oviduct) (d) Part C (uterus) | |
| 79. |
Where is the male magete formed : (i) in humans? (ii) in flowering plants ? |
| Answer» Correct Answer - (i) Testes (ii) Anther | |