Biology Test 28...

Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R :

Assertion A : Late wood has fewer xylary elements with narrow vessels.
Reason R : Cambium is less active in winters.

In the light of the above statements, choose the correct answer from the options given below :

Given below are two statements :

Statement I : Endarch and exarch are the terms often used for describing the position of secondary xylem in the plant body.
Statement II : Exarch condition is the most common feature of the root system.

In the light of the above statements, choose the correct answer from the options given below:

In a woody dicotyledonous tree, which of the following parts will mainly consist of primary tissues?

In dicot roots, the initiation of the lateral roots and the vascular cambium during the secondary growth takes place in:

In a monocot leaf

Lungs are enclosed in

Choose the correct answer from the options given below:

Choose the correct answer from the options given below :

Choose the correct answer from the options given below :

Study the given figure of respiratory passage carefully and identify the parts labelled as A, B, C, D and E.