............is a straw coloured, viscous fluid constituting nearly 55 per cent of the blood.

• Plasma

• Formed Elements

• Blood Groups

• Coagulation of Blood

Sexual reproduction in Algae that takes place through fusion of two similar size gametes is called ................

• Zoospores

• Anisogamous

• Isogamous

• Oogamous

Animals in which the cells are arranged in three embryonic layers are called ________.

• Diploblastic

• Ectoderm

• Tripoblastic

• Endoderm

............. refers to the number of births during a given period in the population that are added to the initial density.

• Natality

• Mortality

• Immigration

• Emigration

In females, the ovaries are located .......... on each side of the lower abdomen.

• one

• two

• three

• four

Through photosynthesis at least a half of the total carbon dioxide fixation on earth is carried out by

• Pteridophytes

• Bryophytes

• Algae

• Gymnosperms

Locust, Butterfly, Scorpion and Prawn are all examples of which Phylum?

• Annelida

• Chordata

• Arthropoda

• Platyhelminthes

............. resources are those resources whose quantity is known.

• Natural resources

• Actual resources

• Potential resources

• Abiotic resources

The main mineral constituents of the continental mass are .......... and alumina.

• iron oxide

• silica

• water

• oxygen

Among plants, these different genera Solanum, Petunia and Datura are placed in which family?

• Cancidae

• Solanaceae

• Felis

• Felidae