A. Cytokinins

B. Gibberellins

D. none of these.

B. Medulla oblongata

C. Thalamus

D. Cerebellum

A. Closed Fixation.

B. Open fixation.

D. Immobilization

B. Asthma

C. Lung cancer

D. Pulmonary tuberculosis

B. Chemosastic movement

C. Chemotropic movement

D. Haptonastic movement

B. Cartilaginous joints.

C. Synovial joints.

D. None of these

A. O2

C. H2O

D. light energy

A. Its short thick branched horizontally growing rhizome

B. Shows heteromorphic alternation of generation

D. Fibrous adventituous roots arise from the lower side of rhizome

A. Number of sepals and petals are 4 or multiple of 4

B. Number of sepals and petals are 2 or multiple of 2

C. Number of sepals and petals are 5 or multiple of 5

A. 9

C. 4

D. 12

A. Longitudinal nerves

C. Ganglia

D. Lateral nerves

A. none of these.

C. Associative neuron

D. Motor neuron

B. chemical energy

C. assimilatory power

D. energized electrons

A. Muscles

B. Glands

C. Sensory organs

A. Reaction centre

B. Photosystem

C. None of these

A. None of these

B. Single

D. Do not have opening

A. Carotenes

C. Chlorophyll b

D. Xanthophyll

A. Chest Cavity

B. Pharynx

C. Buccal cavity

A. Large number of vacoules in a plant cell.

B. Higher ionic concentration inside vacuoles resulting from active pumping of ions at their tonoplastic membrane

C. Higher osmotic pressure of the cell vacuole

A. Lycopods

B. Ferns

C. Seed plants

B. An enzyme that digest endocuticle during an arthropodal ecdysis

C. A newly formed exoskeleton in authropods

D. A process that involves moulting

B. Prteropsids

C. Psilopsids

D. Lycopsids

A. To provide cytoplasmic connection between neurons.

B. To stop the nerve impulse

C. To allow nerve impulse to move in backward direction

A. 650

C. 600

D. 680

A. 6

B. 2

D. 3

A. T.W.Inws

B. W.Stapes

D. Malleus

B. 7 nm.

C. 10-100 ?m.

D. 8 nm

A. Reflex

C. Movement

D. Conduction

A. Dorsal and ventral.

B. Tail and anal

C. All of these

A. None of these

C. Parabronchi

D. Alveoli

A. 1-2%

B. 5%

C. 20%

A. Animals

B. Plants

D. None of these

A. Transmitters

B. Nodes

C. Pores

A. Effectors

B. Neurons

C. All of these

A. Stalk

B. None of these

D. Foot

A. Cork cambium

B. Pith.

C. Vascular cambium.

B. Axon

C. Both of these

D. none of these

A. Orange

B. Red

C. Green

A. The major event in it is accumulation of lactic acid.

C. Ionic imbalance may also cause it.

D. Lactic acid accumulation turns pH in acidic range leading to muscle ache.

A. Leaves respire and utilize O2 and release CO2.

B. Rate of respiration becomes more than rate of photosynthesis.

D. Rate of photosynthesis increases, so do the O2 production, with a net release of oxygen coupled with the uptake of CO2.

A. Homosporous

C. Both depending upon the conditions

D. None of these

B. 6 molecules

C. 1 molecule

D. 3 molecules

A. Mid night.

C. Day time.

D. Night time.

A. Myonemes can change the direction of the body by making it to shorten from anterior to the posterior pole.

C. Move with the help of flagellum, attached to the anterior pole of the body.

D. None of these

A. Ovule

C. Microgametophyte

D. Microsporangium

B. Auxins

C. Cytokinins

D. Gibberellins

A. none of these

C. Hair end organs

D. Meissners Corpuscles

A. 1000

B. 1200

C. 12000

A. None of these

B. Posterior pituitary

D. Anterior pituitary

A. Clostridum tetani.

C. Low O2 level

D. Hypercalcemia