The Fundamental Unit of Life — Science STD 9 — Question

The body of organisms has chitinous cell wall and is made up of hyphae and mycelium:

1. Spirogyra.
2. Rhizopus.
3. Funaria.
4. Riccia.

The branch which deals with the study of cell structure and function is known as:

Animal husbandry is the scientific management of:

1. Animal breeding.
2. Culture of animals.
3. Animal livestock.
4. Rearing of animals.

1. (i), (ii) and (iii)
2. (ii), (iii) and (iv)
3. (i), (ii) and (iv)
4. (i), (iii) and (iv)

Which of the following have been artificially selected?

The ability of nitrogen fixation is found in:

1. Monerans only.
2. Both monerans and protistans.
3. Protistans only.
4. Fungi only.

The selection of crops in mixed cropping is in such a way that they support each others growth:

Complete the analogy given below and choose the correct option Cutin: Epidermis; Suberin:

Which of the following cells can be seen with a naked eye?

Find out the wrong statement from the following:

1. White revolution is meant for increase in milk production.
2. Blue revolution is meant for increase in fish production.
3. Increasing food production without compromising with environment quality is.
4. None of the above.

A group of related genera, with still less number of similarities as compared to the genus and species, constitutes.

1. Order.
2. Class.
3. Family.
4. Division.