Change in extensive property is directly related to the change in of material.
a) Temperature
b) Volume
c) Quantity
d) Pressure
The exchange of gasses between a leaf and ‘its environment takes place through special structures known as:
a) Stomata
b) Cambium
c) Lenticels
d) Phloem
Explanation: Stomata are small openings or pores found on the surface of leaves (and sometimes stems) of plants. They are surrounded by specialized cells called guard cells. Stomata play a vital role in gas exchange by allowing the movement of gases, such as oxygen, carbon dioxide, and water vapor, between the plant and its surroundings. The opening and closing of stomata are regulated by changes in turgor pressure within the guard cells, which help to control the rate of gas exchange and prevent excessive water loss through transpiration.
Which of the following is NOT true for RNA?
a) Has ribose molecule instead of deoxyribose
b) May be enzymatic in nature
c) Can act as genetic material
d) Always single stranded
A technique of molecular biology that helps bring together genetic material from multiple sources is called _______
a) Genetic finger printing
b) Recombinant DNA technology
c) DNA typing
d) DNA sequencing
The unique feature in mitochondria is that it has:
a) Myosin
b) Actin
c) DNA
d) Ribosome
Normal human body temperature is:
a) 150C
b) 370C
c) 99.60C
d) 98.60C
