The chromosome number in the diploid somatic cells in Pisum sativum is

The supplementary gene ratio is 9:3:4

Example for supplementary gene is

Autotetraploids may arise by

Due to the activity of supplementary genes, the colour of glume in Sorghum is changed to

A pentaploid of Solanum has _____ chromosomes which is five times of the basic genome

Roots and stems of plants increase in length due to the activity of

Assertion A ; Reason R

(A) Secondary growth will not occur in dicot stem (R) Cambium is a meristematic tissues which allows secondary growth

Assertion A ; Reason R (A) Tracheids conduct water and mineral salts in Gymnosperms (R) Due to the presence of protoplasm, tracheids are living cells

Raphanobrassica was first produced by a Russian cytologist

The genus _____ is the first known allotetraploid

A layer of parenchyma cells surrounding each vein in leaves is called as

Assertion (A) ; Reason (R) (A) While chewing the pear fruit, we can feel the gritty nature (R) Pear fruit has sclereids in the ground tissue

Assertion (A) ; Reason (R) (A) Trees of higher plants continue to grow throughout their lives (R) Trees contain meristematic tissue which perpetuate themselves

Ascent of sap can be explained by _______ experiment

A compact layer of thin walled cells seen around the vascular bundle of leaf is called as

In leaf, xylem lies towards the

There is no differentiation into cortex and stele in

Assertion A , Reason R

(A) In monocot root polyarch xylem is present (R) In some plants, xylem has four protoxylem points

_______ is a cofactorin enzymes, it is important in evolving O₂ during photosynthesis

______ is not a macronutrient

Assertion A, Reason R (A) The innermost layer of cortex is called as starch sheath (R) Starch grains are abundant in these cells

Which of the following is/are wrong?

a) In maize root xylme is tetrarch; in bean root it is polyarch b) Xylem and phloem are arranged radially alternating with each other c) Xylem is usually tetrarch in dicot root, and polyarch in monocot root

Deficiency of Nitrogen causes

(a) Pholem parenchyma is present in monocot stem, but not in the other (b) Starch sheath is present in dicot stem, but not in the other (c) Hypodermis is collenchymatous in dicot stem and sclerenchymatous in the other (d) Vascular bundles are skull shaped in dicot stem and wedge shaped in others

The process of the absorption of mineral salts is of _______ types

The ground tissue system that lies between the epidermal layers is

Premature leaf fall can be due to the deficiency of

One type of tissues in the plant body of angiosperms have cells which are isodiametrical, with dense cytoplasm and prominent nucleus. Another type consists of cells that have lost the power of dividing and have attained definite form and size. These types are respectively

Which of the following is/are wrong? (a) Stem, root and leaf has three tissue systems (b) Each vascular bundle consists of phloem lying towards the upper epidermis and xylem towards the lower epidermis (c) Dicot leaves are dorsiventral (d) Epidermis consists of a single layer of closely packed cells with cuticles

______ is involved in the biosynthesis of IAA

Mineral elements can be classified into

Companion cells are specialised parenchyma cells present only in

Absorption of water and absorption of mineral salts are

Which of the following statements on the structure of root is/are true? a) In monocot root xylem is polyarch and pith is absent b) Xylem is exarch; it may vary from diarch to tetrarch c) Phloem and xylem are arranged radially d) In dicot root a prominent pith occurs

To which part of the root is the starch sheath of dicot stem homologous?

Path of sap movement is the lumen of

In which type of plants Aerenchyma tissue is present?

Which is not a constituent of enzyme cafactor?

Which of the following statements is wrong?