STD 11 - 13. Plant growth and development — NEET STD 11 Science — Question

Select true statement from given statement.
(i) When xylem and phloem within a vascular bundle are arranged in an alternate manner on different radii, the arrangement is called radial.
(ii) In conjoint type of vascular bundles, the xylem and phloem are situated at the same radius of vascular bundles.
(iii) Conjoint type of vascular bundles present in stems and leaves.
(iv) In the conjoint vascular bundles usually have the phloem located only on the inner side of xylem.
(v) The cortex consists of several layers of thin- walled collenchyma cells with intercellular spaces.

When young plants are grazed too heavily, they get killed because of

Assertion: Metabolism is a defining feature of all living organisms without exception.
Reason: All plants, animals, fungi and microbes exhibit metabolism but no non-living object exhibits metabolism.

Algae are important, we should study algae because

The capacity of an environment to pull on a limited number of individuals is known as

Largest family of flowering plants is

In brown algae, brown colour is due to presence of