Identify the types of simple tissue indicated by 1, 2, 3 and 4 and their function.

The vascular cambium produces xylem on one side and phloem on other because of it:

Meristems are not found in:

Meristematic tissues are composed of :

Match the terms given in column-I with their features given in column-II and choose the correct option. Column-I (Terms) Column-II (Features) A. Fibres I. Cells are living and thin walled with cellulosic cell wall, store food materials in the form of starch or fat. B. Sclereids II. Main water conductive cells of the pteridophytes and the gymnosperms. C. Tracheids III. Thick walled, elongated and pointed cells, generally occurring in groups. D. Vessels IV. Long cylindrical tube like structure and cells are devoid of protoplasm. Characteristic feature of angiosperms. E. Xylem V. Reduced form of parenchyma sclerenchyma cells with highly thickened lignified cellular walls that form small bundles of durable layers of tissue in most plants.

The lacunae in vascular bundles of monocot stems are:

Gaseous exchange between air and internal tissues of old corky stem takes place through:

Choose the correct option for 1 and 2.

Match column-I with column-II and select the correct answer using the options given below. Column-I Column-II A. Xylem vessels I. Store food materials B. Xylem tracheids II. Obliterated lumen C. Xylem fibre III. Perforated plates D. Xylem parenchyma IV. Chisel-like ends

Protective layer found at the site of abscission is:

Collenchyma is present in:

Which combination of tissues acts together to provide the support to the hypocotyl of seedling?

Which one of the following statement is incorrect? (i) Epidermal cell has small amount of cytoplasm and a large vacuole. (ii) Waxy cuticle layer is absent in roots. (iii) Root hairs are unicellular, while stem hairs/ trichomes are multicellular. (iv) Trichomes may be branched or unbranched, soft or stiff and prevent transpiration. (v) Guard cells are dumbbell shaped in dicots and bean-shaped in monocots (e.g., grass).

Most distinct annual rings are formed in:

Dissection of frog is done from ventral side because [BHU 1982]