Improvement in Food Resources — Science STD 9 — Question

Goitre is caused due to deficiency of disease?

1. Fluorine.
2. Vitamin C.
3. Vitamin A.
4. Iodine.

Identify the group among the following, which contains only micronutrients:

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

In nitrogen cycle, which bacteria are responsible for nitrification:

1. Clostridium.
2. Rhizobium.
3. Nitrosomonas.
4. Nitrosomonas and Nitrobacter.

Which of the following states has the highest percentage of irrigated land?

The cell division is restricted to:

While doing onion peeling experiment, what is the most common problem faced in it?

Major constituent of bone is:

Intestine absorb the digested food materials. What type of epithelial cells are responsible for that?

Which of the following group of plants is called vascular cryptogams?

1. Thallophyta.
2. Bryophyte.
3. Pteridophyta.
4. Angiospermae.