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1.	What is the role of seminal vesicles and prostate gland?
Answer» Seminal vesicles and prostate gland occur in male reproductive system. The seminal vesicles and prostate gland add their secretios to the vas deferens which carries sperms from the testes. The secretions of seminal vesicles and prostate gland provide nutrition to the sperms and also make their further transport easier.

2.	The anther contains:A. sepalsB. ovulesC. carpelD. pollen grains
Answer» d) pollen grains

3.	What are the functions performed by tests in human beings?
Answer» The function of testes to make male sex cells (or male gametes) called sperms and also to make the male sex hormone called testosterone. The testosterone hormone about changes seen in the apperance of boys at the time of puberty such as deeper voice, beard, moustache, and more body hair (than girls).

4.	Which of the following is not a part of the female reproductive system in human beings?A. ovaryB. uterusC. vas deferensD. fallopian tube
Answer» c) vas deferens

5.	What are the advantages of sexual reproduction over asexual reproduction?
Answer» i) Sexual reproduction combines DNA from two individuals (male and female) due to which the offspring has a lot of variations. On the other hand, in asexual reproduction, only the DNA of one individual is copied due to which the variations in the offspring are extremely small. ii) Due to lot of variations sexual reproduction allow species to change to more advanced forms from one generation to the next and speed up evolution. On the other hand, asexual reproduction does not allow a species to change much from one generations to the next and hence evolution becomes very, very slow.

6.	Asexual reproduction takes place through budding in:A. amoebaB. yeastC. plasmodiumD. Ieishmania
Answer» Correct Answer - b) yeast

7.	What is the importance of DNA copying in reproduction?
Answer» i) The chromosomes in the nucleus of a cell contain information for the inheritance of features from the parents to next generation in the form of DNA (Deoxyribo Nucleic Acid) molecules. So, the first importance of DNA copying is that the characteristics of the parent organism are transmitted to its offspring. ii) When the DNA already present in the nucleus of a parent cell is copied by making more of DNA by certain biochemical reaction, then slight variation come in two copiews formed. These slight variations in the copying of DNA molecules lead to a slight variations in the offspring produced. Thus, another importance of DNA copying is that some variations are produced in the offspring during reproduction which form the basis for evolution.

8.	How does binary fission differ from multiple fission?
Answer» In binary fission, the parent organism splits (or divides) to form two new organisms. On the other hand, in multiple fission the parent organism splits (or divides) to form many new organisms simultaneouly. Amoeba reproduces by the process of binary fission whereas the malarial parasite Plasmodium reproduces by the process of multiple fission.

9.	How will an organisms be benefited it it reproduces through spores?
Answer» The reproduction by spores takes place in plants. Spores are covered by hard protective coat which enables them to survive under unfavourable conditions like lack of food, lack of water and extreme temperatures. But when the conditions become favourable (food and water are available, and temperature is suitable), then the spores can grow to produce new plants. Thus, the reproduction by spores benefits the plants because by surviving under adverse conditions, the spores make these plants like for ever.

10.	Why is vegetative propogation pracitsed for growing some types of plants?
Answer» Vegetative propogation is practised for growing some type of plants because it has the following advantages: i) All the plants produced by vegetative propogation are genetically similar enough to the parent plant to have all its characteristics. ii) The fruit trees grown from seeds may take many years before they start to bear fruits. But the fruit trees grown by vegetative propogation methods like cuttings or by grafting start to bear fruits much earlier (only after a few growing seasons). iii) The plants grown by vegetative propogation usually need less attention in their early years than the plants grown from seeds. iv) Many plants can be grown from just one parent plant by artificial propogation. v) Vegetative propogation makes possible the propogating of plants such as banana, rose, jasmine and organge that have lost the capacity to produce visible seeds.