Question
Name the term used for metamorphosis of spermatids?
✓
Answer
Spermiogenesis.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Study the age pyramids ‘A’, ‘B’ and ‘C’ of the human population given below and answer the questions that follow:
- Identify pyramids ‘B’ and ‘C’.
- Write the basis on which the above pyramids are plotted.
- Draw the structure of the initiator tRNA adaptor molecule.
- Why is tRNA called an adaptor molecule?
What is recombination? Discuss the applications of recombination from the point of view of genetic engineering.
Explain with the help of suitable examples the three different ways by which organisms overcome their stressful conditions lasting for short duration.
List any two types of IUDs that are available for human females and state their mode of action.
Distinguish between embryo and endosperm found in Angiosperms.
What are Cry proteins? Name an organism that produce it. How has man exploited this protein to his benefit?
Name the blank spaces a, b, c and d given in the following table:
| Type of microbe | Name | Commercial product |
| Bacterium | a | Lactic acid |
| Fungus | b | Cyclosporin A |
| c | Monascus purpureus | Statins |
| Fungus | Penicillium notatum | d |
A cross is made between different homozygous pea plants for contrasting flower positions.
- Find out the position of flowers in F1 generation on the basis of genotypes.
- Work out the cross upto F2 generation.
- Compute the relative fraction of various genotypes in the F2 generation?
Taking the example of white-winged moths and dark-winged moths of England in pre and postindustrialised era, explain evolution by natural selection.
OR
How can evolution by natural selection be explained by melanised moths before and after industrialisation in England?OR
How did industrialisation play a role in Natural Selection of light and dark-coloured moth in England?OR
