Question

Cell secretions are done by: a) Golgi apparatus

b) Rough endoplasmic reticulum c) Smooth endoplasmic reticulum d) Lysosomes.
52
Which of the following can be stored as crystals? a) A bacterium
b) An amoeba
c) A virus
d) A sperm.
53
A cell will swell up if:
a) The concentration of water molecules in the cell is higher than the concentration of water molecules in surrounding medium.
b) The concentration of water molecules in surrounding medium is higher than water molecules concentration in the cell.
c) The concentration of water molecules is same in the cell and in the surrounding medium.
d) Concentration of water molecules does not matter.
54
Chromosome are made up of: a) DNA
b) Protein
c) DNA and Protein
d) RNA
55
Meristematic tissues in plants are: a) Localized and permanent.
b) Not limited to certain regions c) Localized and dividing cells
d) Localized and temporary.
56
Which of the following is not a function of epidermis? a) Protection from adverse condition
b) Gaseous exchange.
c) Conduction of water
d) Transpiration.
57
The precaution which is incorrect in an experiment to prepare temporary mount of onion peel is: (a) the folding of peel should be avoided,
(b) use a brush to transfer the peel from watch glass to the slide,
(c) remove extra water or glycerine coming out of the cover slip with the help of another cover slip, (d) While putting a cover slip, bubbles should be avoided.
58
The cellular components not seen while observing the slide of an onion peel under a compound microscope is:
(a) chromosomes
(b) cell wall
(c) nucleus
(d) Cytoplasm.
59
The precaution which is incorrect in an experiment to prepare temporary mount of onion peel is : (a) the folding of peel should be avoided

(b) use a brush to transfer the peel from watch glass to the slide
(c) remove extra water or glycerine coming out of the cover slip with the help of another cover slip (d) While putting a cover slip, bubbles should be avoided.
60
In the cells of an onion peel, the nucleus is seen on one side of the cell because of the: (a) presence of large central vacuoles
(b) presence of many large vacuoles.
(c) presence of many small vacuoles
(d) absence of vacuoles.

Answer 1

Answer:

golgi apparatus

meristematic are permanent andand localized

gaseous exchange