Question:

Microtubules are made up of by which protein? (Kerala PMT-2001)

A.

Tubulin

B.

Myosin

C.

Actin

D.

Durable protein

Answer» a. Tubulin

Question:

What is correct about Fluid-mosaic model? (JKCMET-2004)

A.

A lipid bilayer and protein included in it.

B.

Above protein layer,one layer of phospholipid is present

C.

Above protein layer,two layer of phospholipid is present

D.

Protein bilayer and phospholipid is included isn it.

Answer» a. A lipid bilayer and protein included in it.

Question:

It is a power house of cell. (AFMC-1998,2001)

A.

Mitochondria

B.

Chloroplast

C.

Nucleus

D.

Golgi-apparatus

Answer» a. Mitochondria

Question:

Scatelum is

A.

an endosperm

B.

a seed coat

C.

an embryo

D.

a cotyledon

Answer» d. a cotyledon

Question:

The protective cover of the radicle in maize seed is called

A.

Micorhiza

B.

Coleptile

C.

Scutelum

D.

Coleorhiza

Answer» d. Coleorhiza

Question:

Who proposed fluid-mosaic model?

A.

Singer and Nicolson

B.

Beadel and Tatum

C.

Robertson and Miller

D.

Watson and Crick

Answer» a. Singer and Nicolson

Question:

Which layer of the wall of microsporangium is made up of Fibrous layer

A.

Middle layer

B.

Endothecium

C.

Tapetum

D.

Epidermis

Answer» b. Endothecium

Question:

Suspensor is made up of

A.

2 to 4 cell

B.

4 to 8 cells

C.

8 to 16 cells

D.

20 to 25 cells

Answer» d. 20 to 25 cells

Question:

In angiosperm the endosperm is formed

A.

In the nucellu

B.

In the embryo sac

C.

In the seed

D.

In the anther

Answer» b. In the embryo sac

Question:

A single ovule produces

A.

3 female gamete

B.

1 female gamet

C.

2 female gamete

D.

4 female gamete

Answer» b. 1 female gamet