NEET BIOLOGY

PLANT PHYSIOLOGY

TRANSPORT IN PLANT

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Phloem is
A
a dead tissue.
B
composed of sieve tube cells and companion cells.
C
responsible to provide support to the plant part.
D
responsible to transport organic nutrients from leaves to other plant parts.
Explanation: 

Detailed explanation-1: -Phloem. The phloem is responsible for translocation of nutrients and sugar like carbohydrates, produced by the leaves to areas of the plant that are metabolically active. It is made up of living cells. The cells walls of these cells form small holes at the ends of the cells known as sieve plates.

Detailed explanation-2: -In vascular plants, phloem is the living tissue that carries organic nutrients (known as photosynthate), particularly sucrose; a sugar, to all parts of the plant. The phloem is concerned mainly with the transport of soluble organic material made during photosynthesis.

Detailed explanation-3: -phloem is the living tissue that transports the soluble organic compounds made during photosynthesis and known as photosynthates, in particular the sugar sucrose, to parts of the plant where needed. This transport process is called translocation.

Detailed explanation-4: -Phloem is a complex permanent tissue. It transports organic food inside the body of the plant bidirectionally. It consists of four types of cells called sieve tubes, companion cells, phloem parenchyma and phloem fibres.

Detailed explanation-5: -Phloem is the vascular plant tissue responsible for the transport and distribution of sugars produced by the photosynthesis.

There is 1 question to complete.