Question

1. Name the tissue which is present in the veins of leaves.
Biology Test - Chapter: 6 Tissues
Marks:25
2. Name the fluid matrix of a connective tissue.
3. What are the functions of phloem?
4. Give one major difference between ligament and tendons.
5. Which connective tissue is specialised for fat storage and act as heat insulator?
6. Do roots of a plant continue growing after their tips are removed? Explain giving reason.
7. Differentiate Chlorenchyma and Aerenchyma.
8. "Multicellular organisms show division of labour." Explain the statement with the help of example.
9. Water hyacinth floats on water surface. Explain.
10. What happens, when platelets are removed from blood?
11. Identify the type of muscular tissues having the following characteristics:
(1) cylindrical, branched and uni-nucleated.
(ii) long with pointed ends and uni-nucleated.
(iii) long cylindrical, unbranched and multi-nucleated.
12. Explain the structure of a neuron with a diagram.
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13. (a) What do you mean by a meristematic tissue?
b) Mention different types of meristematic tissues present in plants. Draw a diagram showing the thre
-ypes of meristematic tissues.​

Answer 1

Answer:

1 . sclerenchyma.

2. blood.

3. Pholem transport food from Leaves to other parts of the plant.

4. two bones can.be connected to each other by another type of connective tissue called the ligament.

tendons connect muscles to bones and are another type of connective tissue.

5. adipose tissue.

6. New cells produced by Meristem are initially like those of Meristem in cell but are they grow and nature their characteristics slowly change and they become differentiated as components of other tissues.

7. Simple permanent tissue contains chlorophyll and performs photosynthesis and then it is called chlorenchyma.

ln aquatic plants large air cavities are present in parenchyma to have them float. such parenchyma type is called arenchyma.

8. It means that each organ tissue is designed for a particular function for example heart of pumping lungs for respiration.

Explanation:

13. The growth of plants of yours and only in certain specific regions this is because the dividing tissue also known as meristematic tissue.

b.

Answer 2

1) Xylem and phloem are the tissue which is present in the veins of leaves.

2) Blood and lymph are the fluid matrix of a connective tissue.

3) Phloem is the vascular tissue responsible for the transport of sugars from source tissues (ex. photosynthetic leaf cells) to sink tissues (ex. non-photosynthetic root cells or developing flowers). Other molecules such as proteins and mRNAs are also transported throughout the plant via phloem.

4) A tendon is a fibrous connective tissue which attaches muscle to bone. Tendons may also attach muscles to structures such as the eyeball. A tendon serves to move the bone or structure. A ligament is a fibrous connective tissue which attaches bone to bone, and usually serves to hold structures together and keep them stable.

5) Adipose tissue is specialised for fat storage and act as a heat insulator.

6) "roots " do not grow when their tips are removed.

This is because the meristematic tissue that are essintial for growth of the roots are present in the tips. once the tips of the root are cut they stop growing and sometimes the plants they support may also stop growing.the cutting of the tips of the root also affect the transport of 'water' and 'mineral' from the soil to the plant.

7) Chrolenchyma

In leaves and tender stems, parenchyma cells may contain chloroplast and in such case a parenchyma is called chlorenchyma.

Aerenchyma

In aquatic plants, fairly large air cavities are present between the parenchyma cells; such a parenchyma is called aerenchyma

8) In multicellular organisms cells are assigned to perform different types of function ..for...example nerve cell help in transmitting message easily to either spinal cord or brain

fat cells helps in retaining heat cardiac muscles which makes up the heart helps in pumping throughout life smooth muscles cell help in contraction and relaxation of body. blood flows to transport food, oxygen ,water, mineral etc.

9) Water hyacinth floats in water due to presence of large air cavities in the parenchyma tissue. These specialized parenchyma tissue are called parenchyma.

10) Blood platelets help us to clot the blood.when you get hurt, blood bleeds out of your body, but after its bleeds, it stop. but if we remove the platelets the blood will never stop, it will continue to bleed.

11) 1) cardiac muscles

2) smooth muscles and unstriated muscles

3) striated muscles

12) The brain is a very complicated organ. In fact, we have yet to learn everything there is to know about the brain. However, we do know that it is comprised of highly specialized cells called neurons.

13) (a)In plant biology, the term "meristematic tissue" refers to the living tissues containing undifferentiated cells that are the building blocks of all specialized plant structures. The zone where these cells exist is known as the "meristem." This zone contains the cells that actively divide and create specialized structures such as the cambium layer, the buds of leaves and flowers, and the tips of roots and shoots. In essence, the cells within the meristematic tissues are what allow a plant to increase its length and girth.

(b) A plant has four kinds of meristems: the apical meristem and three kinds of lateral—vascular cambium, cork cambium, and intercalary meristem.

Hope its help you!!!!