Question
Explain the mechanism of evolution.

Answer

Get the step-by-step solution for this question inside the Vidyadip app.

Get the answer in the app

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

What do you mean by biofertilizer? How do biofertilizers increase soil fertility?
  1. Why are engineered vectors preferred?
  2. A vector is engineered with three features, which facilitate its cloning within the host cell. List the three features and explain each one of them.
Explain any three preventive measures to control microbial infections.
  1. Compare, giving reasons, the J-shaped and S-shaped models of population growth of a species.
  2. Explain "fitness of a species" as mentioned by Darwin.
Study the 3 representative figures of age pyramid relating to human population given below and answer the following question:

  1. Mention the names given to the 3 kinds of age profiles (i), (ii), and (iii).
  2. Which one of them is ideal for a population and why?
  3. How do such age-profile studies help policy makers get concerned about our growing population and prepare for future planning? (say for example: for the year 2022.)
[Hint. The age profile you would name as stable was prepared on the data available on January 2007].
What functions do the female reproductive system perform?
(i) Define the pollination.
(ii) Explain the process of double fertilization.
(iii) Draw a well labelled diagram of fertilized
embryo sac.
Why are colour blindness and thalassemia categorised as Mendelian disorders? Write the symptoms of these diseases seen in people suffering from them.
  1. Given below is the TS of human ovary. Identify the following in the diagram:
  • Corpus luteum.
  • Secondary oocyte.
  • Antrum.
  • Primary follicle.
  • Primary oocyte.
  1. Explain the changes the primary oocyte undergoes while in different follicular stages before ovulation.

​​​​​​​

List the harmful effects of alcohol abuse.