NEET BIOLOGY

PLANT PHYSIOLOGY

PLANT GROWTH

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Jeffrey saw a small plant with a green stem sticking out of the soil. What stage in the plant life cycle is the plant in?
A
seedling
B
germination
C
young plant
D
seed
Explanation: 

Detailed explanation-1: -Seedlings. A small, fragile young plant called a seedling will then poke its way out of the ground and start growing towards the sunlight. The seedling gets many of the nutrients it needs to grow from the soil through its roots. The seedling also gets nutrients from the sun.

Detailed explanation-2: -Seedling growth, which starts when germination is completed, signals a shift in priorities to a rapid growth of root and shoot and establishment of a photosynthetic seedling. In the process, reserve foods are hydrolyzed and provide fuel for energy and building blocks for new macromolecules.

Detailed explanation-3: -The process of seed germination includes the following five changes or steps: imbibition, respiration, effect of light on seed germination, mobilization of reserves during seed germination, and role of growth regulators and development of the embryo axis into a seedling.

Detailed explanation-4: -The main stages in the life cycle of a plant are seed germination, seedling formation, growth, development and differentiation leading to a mature plant, pollination and fertilisation and the formation of fruit and seeds.

There is 1 question to complete.