Tissues — Science STD 9 — Question

Cells which lose their nucleus during differentiation are:

Which one from the following is an example of multicellular organism?

Matrix of connective tissue is produced by:

1. Plasma cells
2. Mast cell
3. Fibroblasts
4. Both (b) and (c)

Cytoplasm is:

1. Unit mass of protoplasm.
2. Protoplasm excluding plasma membrane.
3. Protoplasm excluding plasma membrane and nucleus.
4. Protoplasm excluding plasma membrane and cell organelles.

Which of the following is a bacterial disease?

1. Hepatitis B.
2. Poliomyelitis.
3. Tetanus.
4. Malaria.

Xylem is made of:

The technique used to obtain variety with high yield and other desirable characters is:

1. Intraduction
2. Selection
3. Hybridization
4. Both (a) and (b).

DNA stands for:

Who first proved that heredity is controlled by nucleus?

Metamerism is characteristic feature of:

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