Home
Class 11
BIOLOGY
Assertion : Gill-lamellae in aquatic ani...

Assertion : Gill-lamellae in aquatic animals help in exchange of gases.
Reason : Each gill lamella carries many blood capillaries.

A

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

B

If both the assertion and the reason are true but the reason is not a correct explanation of the assertion

C

If the assertion is true but the reason is false

D

If both the assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
A
The gill filaments of bony fiches also known as gill lamellae are complex structures which have a large surface area. Tiny blood capillaries flour through the secondary lamellae of each gill filament.
Promotional Banner

Similar Questions

Explore conceptually related problems

How do plants and animals help each other in the exchange of gases in the atmosphere?

Assertion : Aerobic respiration involves the exchange of respiratory gases twice. Reason : Exchange occurs from lung to heart and then heart to lung.

Assertion : Fish and other varieties of aquatic animals are used as food. Reason : Fish and other varieties of sea food constitute good source of nutrition.

Assertion:- The aquatic mammals like Dolphins whales etc. do not contain gill slits. Reason : Their adaptation to aquatic life is secondary.

Assertion. Human lungs have enormous surface area for exchange of gases. Reason. In humans glottis is guarded by epiglottis.

With the help of labelled diagram explain the exchange of gases between alveolus and capillary.