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1., , Z., , , , , Explain the importance of reproduction in organisms., Ans: Reproduction is essential for the continuation of species generation after generation., , Describe the process of fertilization in human beings., Ans: The process of fertilization is an internal process that occurs after sexual reproduction. Male reproductive organs produce sperm,, which fuse with ovum in the fallopian tubes of the female. The nucleus of the sperm fuses with the nucleus of the ovum to form a, , zygote. This is the process of fertilization. The Zygote develops multiple cells to form a foetus., , - Choose the most appropriate answer:, , (a) Internal fertilization occurs ;, (i) in female body. (ii) outside female body. (iii) in male body. (iv) outside male body., , Ans: (1) in female body, (b) A tadpole develops into an adult frog by the process of, , (i) fertilization (ii) metamorphosis (iii) embedding (iv) budding, Ans: (ii) metamorphosis, (c) The number of nuclei present in a zygote is, , (i) none (ii) one (iii) two (iv) four, , Ans:(ii) one, g statements are True (T) or False (F):, , - Indicate whether the followin, , 1. Oviparous animals give birth to young ones,, Ans; F, , 2. Each sperm is a single cel],, , Ans; T., , 3. External fertilization takes place in frog., Ans: T, , 4. Anew human individ, Ans: F, , 5. Egg laid after fertilization is made up of a single cell., Ans: T, , ual develops from a cell called gamete,