From evolutionary point of view tracheids and sieve cells are more primitive than tracheae and sieve tubes respectively. The angiosperms have ?

Tracheids, tracheae and sieve tubes

Tracheae sieve cells and sieve tubes

Tracheids tracheae and sieve cells

Assertion From evolutionary point of view human gestation period is believed to be shortening. Reason One major evolutionary trend in humans has been the larger head undergoing relatively faster growth rate in the foetal stage.[AIIMS 2004]

If both the assertion and reason are false

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

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

If the assertion is true but the reason is false

If the assertion is false but reason is true

If both the assertion and reason are false

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

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

If the assertion is true but the reason is false

If the assertion is false but reason is true

Tracheids, tracheae and sieve tubes

Tracheae sieve cells and sieve tubes

Tracheids tracheae and sieve cells

If A and R both one correct and R is an explanation to A

If A and R both are correct and R is an explanation to A

Embark on a journey of knowledge! Take the quiz and earn valuable credits.

Take A Quiz

Challenge yourself and boost your learning! Start the quiz now to earn credits.

Take A Quiz

Unlock your potential! Begin the quiz, answer questions, and accumulate credits along the way.

Take A Quiz