Answer the questions in brief.
4. How do the sperms travel from testes to the egg
cell?
5. What is cloning?
6. Explain what happens after a hen lays a fertilised egg.
F. Answer the following questions in detail.
1. How does an amoeba reproduce by binary fission? Explain.
2. What are viviparous animals? Name any two viviparous animals.
3. What is meant by 'external fertilisation? Give any two examples.
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Answers
4) The sperm move into the epididymis, where they complete their development. The sperm then move to the vas deferens (VAS DEF-uh-runz), or sperm duct. The seminal vesicles and prostate gland make a whitish fluid called seminal fluid, which mixes with sperm to form semen when a male is sexually stimulated....
5) Cloning is the process of producing individuals with identical or virtually identical DNA, either naturally or artificially. In nature, many organisms produce clones through asexual reproduction....
6) After fertilization, a hard protective layer formed over a hen's egg. After the hard shell is formed around the embryo, the hen lays the egg. ... It takes about 3 weeks for the embryo to develop into a chick. After its development is complete, the chick comes out by bursting open the egg shell.....
F. answer in detail.
1) Amoeba reproduces by the common asexual reproduction method called binary fission. After replicating its genetic material through mitotic division, the cell divides into two equal sized daughter cells. This leads to the formation of the two daughter Amoebae cell having a nucleus and its own cell organelles.....
2) Animals such as human beings, cows and dogs which give birth to young ones are called viviparous animals. Animals such as hen, frog, lizard and butterfly which lay eggs are called oviparous animals....
3) External fertilization is a mode of reproduction in which a male organism's sperm fertilizes a female organism's egg outside of the female's body. ... Invertebrates utilizing external fertilization are mostly benthic, sessile, or both, including animals such as coral, sea anemones, and tube-dwelling polychaetes
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4) The sperm move into the epididymis, where they complete their development. The sperm then move to the vas deferens (VAS DEF-uh-runz), or sperm duct. The seminal vesicles and prostate gland make a whitish fluid called seminal fluid, which mixes with sperm to form semen when a male is sexually stimulated.
5) Cloning is the process of producing individuals with identical or virtually identical DNA, either naturally or artificially. In nature, many organisms produce clones through asexual reproduction.
6) After fertilization, a hard protective layer formed over a hen's egg. After the hard shell is formed around the embryo, the hen lays the egg. ... It takes about 3 weeks for the embryo to develop into a chick. After its development is complete, the chick comes out by bursting open the egg shell.
F. answer in detail.
1) Amoeba reproduces by the common asexual reproduction method called binary fission. After replicating its genetic material through mitotic division, the cell divides into two equal sized daughter cells. This leads to the formation of the two daughter Amoebae cell having a nucleus and its own cell organelles.
2) Animals such as human beings, cows and dogs which give birth to young ones are called viviparous animals. Animals such as hen, frog, lizard and butterfly which lay eggs are called oviparous animals.
3) External fertilization is a mode of reproduction in which a male organism's sperm fertilizes a female organism's egg outside of the female's body. Invertebrates utilizing external fertilization are mostly benthic, sessile, or both, including animals such as coral, sea anemones, and tube-dwelling polychaetes