Question

The tissue derived directly from the meristem of embryo is called

as................ .

2. A group of cells with similar structure organized to do a common function

is called as................ .

3. Which plant tissue remains in active metabolic state always ?

4. Sieve tubes and companion cells are found in................tissue. (Xylem/

phloem/collenchyma)

5. Long, narrow, dead cells having a thick deposition of lignin in the cell

wall are called................cells. (Parenchyma/cambium/sclerenchyma)

6. Which tissue is responsible for transport of water in plants ?

7. The special property of muscle fibres to contract forcefully and return to

relaxed state is called................ . (excitability/contractibility/flexibility)

8. A branch of science dealing with the study of bones is called................ .

(Ornithology/physiology/osteology)

9. The fluid matrix of blood is called................ . (plasma/lymph/serum)

10. Spindle-shaped, non-striated, involuntary muscle fibres present in hollow

internal organs like urinary bladder are called................ . (smooth muscle

fibres/striated muscle fibres/cardiac muscle fibres)

11. The brain and the spinal cord are made up of................ . (nephrons/

erythrocytes/neurons)

12. The small, branched processes of a nerve cell are called................ .

(dendrites/axons/neurons)

SHORT ANSWER TYPE QUESTIONS (2 Marks)

1. Define tissue.

2. What do you mean by division of labour ?

3. Name the different elements of xylem and phloem.

4. In hydrophytes xylem is less developed. Why ?

5. Write the composition of mammalian blood​

Answer 1

Answer:

1)permanent

2)tissue

3.meristmatic tissue

4. phloem

5.sclerenchyma

6. xylem

7.contractibility

8.osteology

9.plasma

10. smooth muscles

11. neurons

12. dendrites

short answers

1...a group of cell with similar structures organise a similar function in it

2..division of labour is in only multicellular organism in division of cell different cell perform different functions

3...xylem-tracheids,vessels,xylem fibres,xylem parenchyma

phloem-sieve tube,sieve cell,companion cell,phloem fibres,phloem paernchyma

4...because it is in aquatic plants so it is safe not to be destroyed

5...mammalian blood is in only mammals