STD 11 - 2. Biology classification — NEET STD 11 Science — Question

Tracheids do not collapse under extreme tension due to the presence of

Which one of the following character in man is controlled by recessive gene?

Maize grain is

The stationary phase of a population occurs when

Taxonomic categories which come lower to the rank of class are

The matured tissues are characterized by

Choose the correct statement for the leaf:
i. In simple leaf, the lamina is not incised or incisions do not touch the midrib.
ii. In compound leaf, the lamina is divided into a number of leaflets.
iii. A bud is present in the axil of leaflets of the compound leaf, but not in the axil of both simple and compound leaves.
iv. In pinnately compound leaf, leaflets are present on a common axis, the rachis and it found in neem.
v. Palmately compound leaves, the leaflets are attached at a common point, i. e., at the tip of petiole, as in silk cotton.

The first step in dark reaction of photosynthesis is