Improvement in Food Resources — Science STD 9 — Question

Which of the following contribute to green house effect?

1. Methane (CH₄).
2. Carbon dioxide (CO₂).
3. Chlorofluorocarbons (CFCs).
4. All of these.

Which of the following statements given below is correct about meristematic tissue?

Which of the following poultry bird lays maximum number of eggs?

Berseem and Sudan grass are grown to be used as:

Most abundant animal tissue is:

Heart muscles are:

Which of the following is leguminous green fodder commonly available in winter?

1. Cow pea.
2. Elephant grass.
3. Berseem and lucerne.
4. Rice and jowar.

Seat of photosynthesis is:

1. Leuciplast
2. Chloroplast
3. Chromoplast
4. Both a and c

Main difference between animal cell and plant cell is:

True coelom appeared for the first time in:

1. Mollusca.
2. Nematoda.
3. Annelida.
4. Arthropoda.