Question

2.
1. Name the following:
(i) Thick-walled isodiametric dead cells.
(ii) Two simple tissues which provide mechanical
support to plants.
(iii) Different types of permanent tissues in
plants.
(iv) Growing regions which cause increase in girth
of the plant body.
(v) Growing regions which produce growth in
length.
(vi) Components of xylem.
(vii) Components of phloem.
(viii) Different types of animal tissues
(ix) Different types of connective tissue
(x) Components of blood​

Answer 1

1. Sclerenchyma
2. Collenchyma cells, Sclerenchyma cells
3. Parenchyma, Collenchyma, Sclerenchyma
4. secondary growth root and steam
5. apical meristem
6. Xylene: It consists of tracheids, vessel elements, xylem parenchyma, xylem sclerenchyma and xylem fibres.
7. Phloem: It consists of four elements: companion cells, sieve tubes, bast fibres, phloem fibres, intermediary cells and the phloem parenchyma.
8. There are four types of tissues found in animals: epithelial tissue, connective tissue, muscle tissue, and nervous tissue.
9. Connective tissue proper includes: loose connective tissue (also called areolar) and dense (irregular) connective tissue. Specialized connective tissue types include: dense regular connective tissue, cartilage, bone, adipose tissue, blood, and hematopoietic tissue.
10. Blood is a specialized body fluid. It has four main components: plasma, red blood cells, white blood cells, and platelets. Blood has many different functions, including: transporting oxygen and nutrients to the lungs and tissues.

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