Biology
Sandesh observed a slide containing the longitudinal section of a plant tissue found in all parts of the plant like-root, stem and leaves. Different types of cells are visible in the tissue as shown alongside in the diagram:
(a) Identify and name the kind of tissue shown above. Is it a kind of simple permanent tissue or complex tissue ?
(b) Distinguish between simple permanent tissue and complex permanent tissue.
(c) Write one important role of the above mentioned tissue.
Tissues
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Answer
(a) Phloem tissue. It is a complex permanent tissue.
(b)
| Simple permanent tissue | Complex permanent tissue |
|---|---|
| Made up of only one type of similar cells | Made up of more than one type of cells |
| Performs a single function like support or storage | Performs multiple functions, mainly transport |
| All cells are similar in structure and function | Cells are different in structure and function |
| Found in every part of plant | Found in vascular region of plant |
| Examples: Parenchyma, Collenchyma, Sclerenchyma | Examples: Xylem, Phloem |
(c) The role of phloem is transportation of food from the leaves to all parts of the plant.
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Related Questions
The figures (A and B) given below are two kinds of animal tissues. Study the figures and answer the following questions:
- Identify the tissue A and B.
- Label all the guidelines marked in the figures A and B.
- Write one common function of both the tissues A and B.
- Mention one functional difference between A and B.
- Write one specific location of each (A and B) in human body.
- What are the two kinds of fibrous connective tissue?
- Write one important function of each.
- Draw a neat diagram of fibrous connective tissue. Label its four important parts.
Assertion (A): Lateral (or cambium) meristem is responsible for the increase in the girth (diameter) of the stem.
Reason (R): Cambium is located near the tips of the root and stem and also on the tips of axillary buds where growth occurs at a faster rate.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): Collenchyma is composed of long and narrow cells. These cells have very thick walls due to the deposition of lignin.
Reason (R): Collenchyma stores food and provides temporary support to the parts of a plant.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.