Assignment of Class 8th, Science Reproduction In Animals - Study Material
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•Which life process ensures that a, plant of animal species will not, disappear from the earth?, • A) Digestion, • B) Locomotion, • C) Respiration, • D) Reproduction
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• Which organ in the male reproductive, system produces sperms?, • A) Epidermis, • B) Vas deference, • C) Fore skin, • D) testes
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• Which stage comes earlier in the, development of a human baby from, zygote?, A)foetus, B)Embryo, C)Implantation, D)Parturition
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QAnimals exhibiting external fertilisation produce, a large number of gametes. Pick the appropriate, reason from the following. (NCERT Exemplar), a. The animals are small in size and want to, produce more offsprings., b. Food is available in plenty in water., c. To ensure better chance of fertilization, d. Water promotes production of large number of, gametes
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• What technique is used to help sterile, couple to conceive baby?, • A) Internal Fertilization, • B) External Fertilization, • C) In-Vitro Fertilization
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•, , In human beings, the correct sequence of events during, reproduction is (NCERT Exemplar), a. Gamete formation, fertilisation, zygote, embryo, b. Embryo, zygote, fertilisation, gamete formation, c. Fertilisation, gamete formation, embryo, zygote, d. Gamete formation, fertilisation, embryo, zygote
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• Which of the following animal, reproduce through internal, Fertilization?, • A) Frog, • B) Hen
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• Tadpoles is the developing stage of, a. Dogs, b. Cats, c. Frogs, d. Human
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Q Sets, , of reproductive terms are given below. Choose the set, that has an incorrect combination. (NCERT Exemplar), • a. Sperm, testis, sperm duct, penis, • b. Menstruation, eggs, oviduct, uterus, • c. Sperm, oviduct, egg, uterus, • d. Ovulation, egg, oviduct, uterus
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Q. Foetus is the, a.Well developed embryo, b. Developing embryo, c. A zygote, d. Male gamete
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In the list of animals given below, hen is the odd one, out., (human being, cow, dog, hen), State the reason for this is ? (NCERT Exemplar), a. It undergoes internal fertilisation, b. It is oviparous, c. It is viviparous, d. It undergoes external fertilisation
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Aquatic animals in which fertilisation, occurs in water are said to be (NCERT, Exemplar), a.Viviparous without fertilisation, b. Oviparous with external fertilisation, c. Viviparous with internal fertilisation, d. Oviparous with internal fertilisation
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Q. Animals exhibiting external fertilisation produce a large number, of gametes. Pick the appropriate reason from the following. (NCERT, Exemplar), a. The animals are small in size and want to produce more, offsprings, b. Food is available in plenty in water., c. To ensure better chance of fertilization, d. Water promotes production of large number of gametes
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• Which of the following statements about, reproduction in humans is correct? (NCERT, Exemplar), a. Fertilization takes place externally, b. Fertilisation takes place in the testes, c. During fertilisation egg moves towards the, sperm, d. Fertilisation takes place in the human female.
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In humans, the development of fertilized, egg takes place in the: (NCERT, Exemplar), a.Ovary, b. Testis, c. Oviduct, d. uterus
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•Homework, •Date:24/Jan, •Submission date:26/Jan
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Short Answer type Questions, Observe the figure given, below and answer the, Following question:A) Identify A and B, B) Identify the process and, explain the mechanism
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After observing above figure, answer the, following., , a) . Read the following statement and label, them in the figure., i. The part which produces female gametes., , ii. The part where development of the baby, takes place., iii. The part through which the developing, embryo passes to reach the utreus.
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• Explain the future development of the, embryo that would take place after in, gets embedded in the uterus.
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•Hens and frogs are, both oviparous animals, but exhibit different, types of, fertilization.Why?
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• Humans and hens both possess internal, fertilization, but how their embryo, development differs?, Or, • How embryo development differs in, humans and hen?
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. Why do fishes and frogs lay a hundreds of eggs?, Q.What medical technique make sterile couples fertile? Explain the mechanism., Q.Read the statement carefully:Q, , “The changes in tadpole give rise to a, frog”, A) Explain how fertilisation takes place in, frog?, B) Name the process under which tadpole, becomes frog., C) Explain life cycle of frog., •
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• Explain the larval to adult stages of, silkmoth?, • What is Cloning? Who gave this technique?, Explain the mechanism of Cloning., • What is the significance of “bulges” in, hydra ?