BIOLOGY SET-4

Question 1:

The living content of cell is called protoplasm. It is composed of

Cytoplasm only

Cytoplasm and nucleoplasm

Nucleoplasm only

Cytoplasm, nucleoplasm and other organelles

Question 2:

Which one of the following statements about Histone proteins are correct?

Histones are proteins that are present in mitochondrial membranes.

Histones are proteins that are present in the nucleus in association with DNA.

Histones are proteins associated with lipids in the cytosol.

Histones are proteins associated with carbohydrates in the cytosol.

Question 3:

Study the following statements.
I. Control room of the cell is Nucleus.
II. Nucleus was discovered by Robert Brown.
III. Nuclear envelope is absent in bacteria.
Which of the statement(s) given above is/are correct about nucleus?

Only I

Only II

I and II

I, II and III

Question 4:

Consider the given cell organelles.
I. Mitochondria
I. Plastids
III. Ribosome
Which of the cell organelle(s) given above is/are common in both plant and animal cells?

I, II and III

I and II

I and III

Only II

Question 5:

What is a tonoplast?

Outer membrane of mitochondria.

Inner membrane of chloroplast.

Membrane boundary of the vacuole of plant cells.

Cell membrane of a plant cell.

Question 6:

How many cells and meiosis are needed to produce 200 cells?

100 and 50 respectively

25 and 50 respectively

50 and 25 respectively

50 and 50 respectively

Question 7:

Which one of the following features is an indication for modification of the stem of a plant?

Presence of ‘eye’ on potato

‘Scale’ found in onion

‘Tendril’ found in pea

‘Hair’ present in carrot

Question 8:

Study the following statements.
I. True fruits are developed from ovary.
II. Apple is an example of false fruit.
Which of the statements (s) given above is/are correct?

Only I

Only II

I and II

NONE

Question 9:

‘Phloem’ in plants is mainly responsible for

transportation of food

transportation of amino acid

transportation of oxygen

transportation of water

Question 10:

Consider the following statements
I. Aerenchyma tissue is found in hydrophytes.
II. Number of stomata is less and sunken in xerophytes.
Which of the statement (s) given above is/are correct?

I, and II

NONE

Only II

Only I

Question 11:

Study the following statements.
I. Neurons are considered as the longest cells of the body.
II. Neurons from the structural and functional unit of the nervous system.
III. Nervous tissues are found in the brain only.
Which of the statements given above is/are correct?

I and II

II and III

I and III

All of these

Question 12:

Which of the following is not a connective tissue?

Adipose tissue

Compact bone

Cardiac muscle

Areolar tissue

Question 13:

The macro-nutrients provided by inorganic fertilisers are:

carboon, iron and boron.

magnesium, manganese and sulphur.

magnesium, zinc and iron

nitrogen, phosphorus and potassium.

Question 14:

In biological terms, ……… is a relationship between two organisms in which one organism benefits and the Is the other unaffected ?

amensalism

mutualism

commensalism

parasitism

Question 15:

Which one of the following will happen if the medium surrounding the cell has a higher concentration than the cell?

The cell will gain water.

The cell will deplasmolyse

There will be no change.

The cell will lose water

BIOLOGY SET-4

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