Most Popular Questions & Answers For CBSE Class 7 Science

Alia

Jul 21, 2013

How do unicellular organisms respire?

Answer.

Cellular respiration takes place in each and every living cell. The mechanism of 'breathing' in unicellular organisms is different from multi-cellular organisms. Single celled org...

Answer (14)

Advaithmanikantan

Nov 24, 2013

how does a plant respire ?

Answer.

plants respire through stomata present in leaves green plant respires all the time day and night. All parts of the plant respire the leaves the stem the roots and even the flowers.

Answer (6)

Neha choubisa

Dec 4, 2013

Explain the mechanism of breathing in humans

When we inhale air,it passes through our nostrils into the nasal cavity. from the nasal cavity,the air reaches our lungs through the wind pipe.lungs are present in the chest cavity.this cavity is sorrounded by ...

Amandeep Kaur Sekhon

Dec 1, 2014

Describe the process of respiration in the following animals :
Earthworm, Insect, Fish, Frog

Sol:
Respiration
Respiration is the process of taking ...

Answer (2)

Soumik paul

Aug 7, 2013

What is the effect of exhaled air on lime water?

exhaled air contain carbon doixide and when it comes contact with lime water, it turns milky.

Answer (3)

Pragnapragath

Dec 30, 2014

What is the mode of respiration in earthworm?

Sol:

Respiration<...

PRIYANKA JENIFFER

Oct 21, 2014

Why are muscle cramps caused after a strenuous exercise?

Cramps ocurrs due to the lactic acid formed due to anaerobic respiration in our muscle cells.

Answer (5)

Ashish

Sep 16, 2017

Explain in brief the life cycle of silk moth

This answer has an image. Please click on the question to read more.

Pragnapragath

Dec 30, 2014

Explain the process of respiration in cockroach.

Sol:

Respiration
...

Naman marria

Sep 8, 2013

why is it not good to sleep under a tree at night?

At night, the atmosphere surrounding the tree is rich in C02 which is harmful , since photosynthesis does not take place at night and only respiration occurs. So , sleeping under tree is not advi...

Answer (17)

Alia

Jul 21, 2013

How do unicellular organisms respire?

Answer.

Cellular respiration takes place in each and every living cell. The mechanism of 'breathing' in unicellular organisms is different from multi-cellular organisms. Single celled org...

Answer (14)

Advaithmanikantan

Nov 24, 2013

how does a plant respire ?

Answer.

plants respire through stomata present in leaves green plant respires all the time day and night. All parts of the plant respire the leaves the stem the roots and even the flowers.

Answer (6)