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Answers
Explanation:
A. (A) Parmenent tissue
(B) Simple permanent tissue
(C) Parenchyma
(D) Sclerenchyma
(E) Xylem
(B) 1. Cell theory is explained by Schwaven and Schleiclen .According to the ththeory
- All living organisms compiled of cell
- All cells arrised from pre- exicting cells
- All cells of the body involved in the metabolic activity of the organisms.
2. Bone :Bone is the specialized supporting connective tissues. It gives shape and size to the external and internal structure of the body which helps in movement as well as protects the delicate organs. All the types of blood cells are produced by the bone marrow hematopoietic stem cell that is seen within the bone.
Cartilage:
(1)It provides support and flexibility to body parts.
(1)It provides support and flexibility to body parts. (2) It smoothens surface at joints.
3..
Blood is a fluid connective tissue that consists
Blood is a fluid connective tissue that consists of plasma, blood cells and platelets. It circulates throughout our body delivering oxygen and nutrients to various cells and tissues. It makes up 8% of our body weight. An average adult possesses around 5-6 litres of blood.
4.
Disadvantages:
Self-pollination does not allow new adaptions according to the change in the environments.
Self-pollination does not allow new adaptions according to the change in the environments. It can lead to the reduced health of the species, due to the breeding of related specimens.
Self-pollination does not allow new adaptions according to the change in the environments. It can lead to the reduced health of the species, due to the breeding of related specimens. Immunity to diseases decreases.
5.
The advantages of self-pollination are as follows:
Much surer in bisexual flowers where stamens and carpels mature simultaneously.
Much surer in bisexual flowers where stamens and carpels mature simultaneously.Indefinite preservation of parental characters.
Much surer in bisexual flowers where stamens and carpels mature simultaneously.Indefinite preservation of parental characters.No wastage of pollen grains.
Much surer in bisexual flowers where stamens and carpels mature simultaneously.Indefinite preservation of parental characters.No wastage of pollen grains.Flowers are not required to be showy and large.
Much surer in bisexual flowers where stamens and carpels mature simultaneously.Indefinite preservation of parental characters.No wastage of pollen grains.Flowers are not required to be showy and large.Nectar and scent are not required to be produced by flowers.