Home
Class 9
BIOLOGY
Assertion : Birds have one ovary. Reas...

Assertion : Birds have one ovary.
Reason : This reduces the body weight for flight.

A

If both Assertion and Reason are true and Reason is the correct explanation of Assertion

B

If both Assertion and Reason are true, but Reason is not the correct explanation of Assertion

C

If Assertion is true but Reason is false

D

If both Assertion and Reason are false

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • CLASSIFICATION OF ANIMALS : VERTEBRATES

    CENGAGE BIOLOGY|Exercise CONSOLIDATED EXERCISE |3 Videos

  • CLASSIFICATION OF ANIMALS : VERTEBRATES

    CENGAGE BIOLOGY|Exercise CONSOLIDATED EXERCISE (MCQs)|38 Videos

  • CLASSIFICATION OF ANIMALS : VERTEBRATES

    CENGAGE BIOLOGY|Exercise CHALLENGING EXERCISE |2 Videos

  • CLASSIFICATION OF ANIMALS : INVERTEBRATES

    CENGAGE BIOLOGY|Exercise CHALLANGING EXERCISES|4 Videos

  • CLASSIFICATION OF PLANTS

    CENGAGE BIOLOGY|Exercise QUESTIONS|5 Videos

Similar Questions

Explore conceptually related problems

Assertion : Birds have penumatic bones. Reason : Birds reduce their body weight for normal flight.

Assertion.Avianbones are pneumatic. Reason. This makes body light for flight in the air.

Assertion : Birds are with pneumatic bones. Reason : Air sacs make the bones lighter which helps in the flight of the birds.

Assertion : Birds have no mammary gland. Reason : Pigeonds secrets 'pigeon's millk'

Assertion Telogonic is a condition of ovary Reason The telogonic gonad is found in Ascaris.

Assertion : For a floating body to be in stable equilibrium, its centre of buoyancy must be located above the centre of gravity. Reason : The torque produced by the weight of the body and the upthrust will restore body back to its normal position, after the body is disturbed.

Assertion: Gymnosperms seeds are naked. Reason: They lack ovary wall.

Assertion: In birds , the skin is moist. Reason: Moist skin of birds reduces effects of friction due to flying in air.

Assertion : Adrenal cortex is called the gland for "fight, fright, and flight." Reason : The hormones adrenaline and nor-adrenaline help the body to combat against stress and emergency conditions.