tissue A and tissue B constitute tissue C A carries water while B carries food for the plants identify A,B,C
Answers
Answer:
Tissue A is xylem. Its main function is conduction of 'water and minerals' from the root of the plant to its leaf. It provides support for tissues that are soft.
Tissue B is phloem. It moves from green tissue to the 'different parts' of the plant. It carries the food prepared in the leaf to various parts of the plant.
Tissue c is the vascular bundle. It is because 'xylem' and 'phloem' constitute the 'vascular tissue system'.
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Tissue A: It is xylem
Tissue B: It is phloem
Tissue C: It is vascular bundles
As we know that A and B is xylem and phloem so let us see something more about them:
Xylem:
1.This term is derived from greek word xylon meaning wood. The term was given by Carl Nageli.
2.The main function of xylem is to carry water from roots to different parts of plant.
3. It is composed of different types of cells namely:
tracheids, vessels, xylem parenchyma and xylem fibres. Tracheids and vessels are hollow tube-like structures that help in conducting water and minerals.
4. It also provides the mechanical support to the plant.
Phloem:
1.The term is derived from greek word phloios meaning bark.The term given by Carl Nageli.
2.The function of phloem tissue is to conduct the soluble organic component synthesized by the leaves through photosynthesis to different parts of plant [where needed] in the form of complex insoluble substance sucrose.
3.Phloem tissue consists of conducting cells, generally called sieve elements, parenchyma cells, including both specialized companion cells or albuminous cells and unspecialized cells and supportive cells, such as fibres and sclereids.
4. The process of transportation of complex molecule is known as Translocation.
The vascular bundles:
It is a part of transport system in plant.The transportation occurs itself in the vascular tissue which are Xylem and Phloem.
The types of vascular bundles are:
A concentric, periphloematic
B concentric, perixylematic
C radial with inner xylem, here with four xylem-poles, left closed, right open
D collateral closed
E collateral open
F bicollateral open
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