Botany MCQs for NEET — Practice Questions with Answers

The NCERT text mentions: '...whereas cells in a watermelon may increase in size by upto 3,50,000 times. In the former, growth is expressed as increase in cell number; the latter expresses growth as increase in size of the cell.' (Chapter: PLANT_GROWTH_AND_DEVELOPMENT, Section 13.1.2).

The NCERT text states: 'While the growth of a pollen tube is measured in terms of its length...' (Chapter: PLANT_GROWTH_AND_DEVELOPMENT, Section 13.1.2).

The NCERT text specifies: '...an increase in surface area denotes the growth in a dorsiventral leaf.' (Chapter: PLANT_GROWTH_AND_DEVELOPMENT, Section 13.1.2).

The NCERT text states: 'You also know that in dicotyledonous plants and gymnosperms, the lateral meristems, vascular cambium and cork-cambium appear later in life. These are the meristems that cause the increase in the girth of the organs in which they are active. This is known as secondary growth of the plant...' (Chapter: PLANT_GROWTH_AND_DEVELOPMENT, Section 13.1.1).

The NCERT text defines absolute growth rate as: 'measurement and the comparison of total growth per unit time is called the absolute growth rate.' (Chapter: PLANT_GROWTH_AND_DEVELOPMENT, Section 13.1.4).

The NCERT text defines relative growth rate as: 'The growth of the given system per unit time expressed on a common basis, e.g., per unit initial parameter is called the relative growth rate.' (Chapter: PLANT_GROWTH_AND_DEVELOPMENT, Section 13.1.4).

The NCERT text states: '$W_1 = W_0 e^{rt}$...Here, r is the relative growth rate and is also the measure of the ability of the plant to produce new plant material, referred to as efficiency index.' (Chapter: PLANT_GROWTH_AND_DEVELOPMENT, Page 170).

The NCERT text mentions: 'The plant cells grow in size by cell enlargement which in turn requires water. Turgidity of cells helps in extension growth. Thus, plant growth and further development is intimately linked to the water status of the plant.' (Chapter: PLANT_GROWTH_AND_DEVELOPMENT, Section 13.1.5).

The NCERT text states: 'Oxygen helps in releasing metabolic energy essential for growth activities.' (Chapter: PLANT_GROWTH_AND_DEVELOPMENT, Section 13.1.5).

The NCERT text says: 'Nutrients (macro and micro essential elements) are required by plants for the synthesis of protoplasm and act as source of energy.' (Chapter: PLANT_GROWTH_AND_DEVELOPMENT, Section 13.1.5).