Respiration in Plants

Q.

Question 1
What advantage does a terrestrial organism have an aquatic organism with regard to obtaining oxygen for respiration?

Q. (b) State the various steps involved in the process of photosynthesis.

Q.

(a) Give the main points of difference between respiration in plants and respiration in animals.
(b) Describe the exchange of gases which takes place in the leaves of a plant (a) during daytime, and (b) at night.
(c) Which contains more carbon dixoide : exhaled air or inhaled air ? Why ?

Q.

Why do the plants need less energy than animals?

Q. What is the common process for both aerobic and anaerobic respiration? What is formed as a result of this process?

Q. In plants, exchange of gases occurs across the surface of

1. Roots and Stems only
2. Stems and Leaves only
3. Leaves only
4. Stems, Leaves and Roots

Q.

How does exchange of gases takes place across the surface of the stem of a plant?

Q. The exchange of gases in plants is mainly through ______.

1. stalk
2. pedicel
3. stomata
4. flowers

Q.

Name three end products of photosynthesis.

Q.

Describe the process of respiration in the following parts of a plant :
(a) Root (b) Stem (c) Leaves

Q.

What are stomata and lenticels ?what is their role in respiration?

Q. Explain why, a land plant may die if its roots remain waterlogged for a long time.

Q.

List the four external factors affecting photosynthesis.

Q.

had a doubt while reading life process

Pg: 97 1st para

Massive amount of gaseous exchange takes place in the leaves through these pores(stomata)for photosynthesis but imp to note that gaseous exchange occur across the surface of stem root and leaves as well.

does these stem and roots also have stomata for gaseous exchange or something else is responsible for it?

Q.

Photosynthesis and respiration do not happen simultaneously in plants during _____.

1. noon

2. evening

3. night

4. early morning

Q.

Which part of roots is involved in the exchange of respiratory gases?

Q.

Explain why, plants have low energy needs as compared to animals.

Q.

Question 16
Observe the diagram given as Figure 1.1 and label the following terms given in the box.

Q.

Question 37
“All plants give out oxygen during day and carbon dioxide during the night”. Do you agree with this statement? Give reason.

Q.

Name the process by which plant parts like roots, stems, and leaves get oxygen required for respiration.

Q.

Fill in the blanks to complete the analogy:

Oxygen: Respiration; Carbon dioxide: ___________

Q.

The breathing and respiration in woody stem of a plant takes place through :
(a) root hair
(b) lenticels
(c) closed stomata
(d) open stomata

Q.

Out of photosynthesis and respiration in plants, which process occurs :
(a) all the time ?
(b) only at daytime ?

Q.

Name the areas in a woody stem through which respiratory exchange of gases takes place.

Q.

Carbon dioxide is released during the process of _____________.

Q. How does respiration occur in the roots of the plants?

Q. Which of the following is a waste product of photosynthesis?

1. Carbon dioxide
2. Oxygen
3. Nitrogen
4. Glucose

Q.

Name the small opening through which water enters the seeds.

Q.

What is the name of the extensions of the epidermal cells of a root which help in respiration ?

Q. Complete this table.

Conditions	Flow of gases in Plants
Dark	1)
Dim	2)
Bright	3)

1. 1) Oxygen taken in, carbon dioxide given out
   2) Carbon dioxide taken in, oxygen given out
   3) Neither gas is taken in or given out
2. 1) Carbon dioxide taken in, oxygen given out
   2) Oxygen taken in, carbon dioxide given out
   3) Neither gas is taken in or given out
3. 1) Neither gas is taken in or given out
   2) Carbon dioxide taken in, oxygen given out
   3) Oxygen taken in, carbon dioxide given out
4. 1) Oxygen taken in, carbon dioxide given out
   2) Neither gas is taken in or given out
   3) Carbon dioxide taken in, oxygen given out