Question
ICSEENIBI10003200

Account for the following:

(iii)The leaves of certain plants roll up on a bright sunny day.

Solution

On a bright Synny day, leaves roll up to decrease the area of the leaf. This reduces the transpiration in leaves helping them to conserve more water.

Sponsor Area

Some More Questions From Transpiration Chapter

Briefly explain the following terms:

Guttation 

Name the following:

The waxy layer on the epidermis of the leaf meant to reduce transpiration.

Give the biological/technical terms for the following:
Permanently open structures seen on the bark of an old woody stem.

Given below are five groups of terms. In each group, arrange and rewrite the terms in the correct order so as to be in a logical sequence. For example,

Question:  Implantation, Parturition, Ovulation, Gestation, Fertilisation.

Answer: Ovulation, Fertilisation. Implantation. Gestation, Parturition.

Spongy ceiJs, Upper epidermis, Stoma, Palisade tissue, Sub-stomatal space

Mention the exact location of the following structures:

iii. Lenticels

An apparatus as shown below was set up to investigate a physiological process in plants. The setup was kept in sunlight for two hours. Droplets of water were then seen inside the bell jar. Answer the questions that follow:


i. Name the process being studied.
ii. Explain the process named above in ii.
iii. Why was the pot covered with a plastic sheet?
iv. Suggest a suitable control for this experiment.
v. Mention two ways in which this process is beneficial to plants.
vi. List three adaptations in plants to reduce the above mentioned process.

Study the diagram given below and answer the following questions:

(i) Name the process being studied in the above experiment.

(ii) Explain the process mentioned in (i) above.

(iii) Why is oil placed over water?

(iv)What do we observe with regard to the level of water when this setup is placed in

(1) bright sunlight, (2) humid conditions and (3) on a windy day?

(v) Mention any three adaptations in plants to overcome the process mentioned in (ii)

Mention the effects of two individuals in a street fight on the following organs by the autonomous nervous system (one has been done for you).


Organ Sympathetic nervous system Para-sympathetic nervous system
eg Lungs  Dilates bronchi and brochioles contricts bronchi and bronchioles

 

1) Heart 

2 Pupils of the eye

3 . Salivary 
   

(ii) List four major activities of the Red Cross.

Name the following:

(ii) A plant with sunken stomata.