Biology (Quiz 1) : Science : Class 12 - Sample Questions : Amrita Vidyalayam eLearning Network

Biology

	Quiz 1 Quiz 2
	Quiz 1 Quiz 2

1)

The two main events are gametogenesis and gamete transfer.

2)

The process of formation of megaspores from the megaspore mother cell is called

3)

The testes are situated outside the abdominal cavity within a pouch called

4)

The are paired folds of tissue under the labia majora.

5)

Intentional or voluntary termination of pregnancy before full term is called

	6)	The virus that cases acquired immune deficiency syndorme (AIDS) parasitizes
		The membrance of choice1B cells helper T cells cytoxic

	7)	Autoecology deals with
		Ecology of many species all the above Ecology of species Ecology of community

	8)	MAB stands for
		Mayer Anderson and bisby Man and biotic community man antibiotics and bacteria Man and biosphere

	9)	Red Data book provides data on
		Lists of plants and animals Red colored fishes Endangered plants and animals Red flowered plants

	10)	Which of the following is the major cause of pollution
		fungi man hydrocarbon gases plants

	11)	A clone is a group of individuals obtained through
		Vegetative propagation Cross pollination Self pollination Hybridization

	12)	Axillary buds are used to raise crop of
		Wheat Groundnut Rice Sugarcane

	13)	Which one of the following is not used for ex situ plant conservation?
		Field gene banks Shifting cultivation Botanical Gardens Seed banks

	14)	Question textA phenomenon when parasite parasitizes themselves is known as
		Parasitoids Hyperparasitism Polyxenous parasitism Monoxenous parasitism

	15)	A monocarpic plant is one which
		none of these has only one carpel produces only one seed flowers and fruits only once in life time and thereafter dies

	16)	DNA replication takes place during
		G1 - phase S - phase G2 - phase Prophase

	17)	In a plant organ, which is covered by periderm and the stomata are absent, some gaseous exchange still takes place through
		pneumatophores trichomes aerenchyma lenticels

	18)	The method of producing thousands of plants through tissue culture is called
		Micropropagation Biofortification Somatic hybridization Biomagnification

	19)	Hardening of the arteries due to deposition of cholesterol is called
		Stenosis Atherosclerosis Thrombosis Rhinitis

	20)	Heparin is produced by
		Liver cells Plasma cells Spleen cells Blood cells

21)

Neuroglial cells support and protect.

	22)	___is an abundant inhibitory neurotransmitter in CNS.
		Noradrenaline GABA Adrenaline Acetylcholine

	23)	Evolution of different species in a given area starting from a point and spreading to other geographical areas is known as
		Natural selection Adaptive radiation Migration Divergent evolution

	24)	The leaves are modified into spines in
		Australian Acacia Opuntias Utricularia Nepenthes

	25)	The lateral roots originate from
		Pericycle cells Endoderm cells Epiblema Cortical cells below root hairs

	26)	Sunflower belongs to the family
		Fabaceae Liliaceae Asteraceae Cruciferae

Cite this Simulator: