The term "Bacteriophage" is coined by ____________.

(a)

Twort

(b)

Luria

(c)

d' Herelle

(d)

Pasteur

When the root is thick and fleshy, but does not taken a definite shape, it said to be _________

(a)

Nodulose root

(b)

Tuberous root

(c)

Monilliform root

(d)

Fasiculated root

Fused tepaIs are called ______________.

(a)

Personate

(b)

Ligulate

(c)

Apotepalous

(d)

Syntepalous

Which organelle is associated in the formation of basal granules, cillia and flagella?

(a)

Golgi apparatus

(b)

Centrosome

(c)

Mitochondria

(d)

Lysosome

A living organism is differentiated from non-living structure based on _______.

(a)

Reproduction

(b)

Growth

(c)

Metabolism

(d)

All the above

The second largest animal phylum is ___________

(a)

Ctenophora

(b)

Arthropoda

(c)

Mollusca

(d)

Coelenterata

Presence of gills in the tadpole of frog indicates that _______.

(a)

fishes were amphibious in the past

(b)

fishes evolved from frog -like ancestors

(c)

frogs will have gills in future

(d)

frogs evolved from gilled ancestor

After a long deep breath, we do not respire for some seconds due to ______.

(a)

more CO₂ in the blood

(b)

more O₂ in the blood

(c)

less CO₂ in the blood

(d)

less O₂ in the blood

What will happen if the stretch receptors of the urinary bladder wall are totally removed?

(a)

Micturition will continue

(b)

Urine will be continue to collect normally in the bladder

(c)

There will be micturition

(d)

Urine will not collection the bladder

Severe hearing loss occurs with frequent or prolonged exposure to sound with intensities greater than _____________

(a)

100dB

(b)

90dB

(c)

120dB

(d)

120dB

Spermatogenesis in mammalian testes is controlled by ______.

(a)

Luteinising hormone

(b)

Follicle stimulating hormone

(c)

FSH and Prolactin

(d)

GH and Prolactin

__________ is not a characteristic of leghorn.

(a)

Small size

(b)

Meat production

(c)

Single comb

(d)

Wattles with brown colour

When a leaf trace extends from a vascular bundle in a dicot stem, what would be the arrangement of vascular tissues in the veins of the leaf?

(a)

Xylem would be on top and the phloem on the bottom

(b)

Phloem would be on top and the xylem on the bottom

(c)

Xylem would encircle the phloem

(d)

Phloem would encircle the xylem

Embolism during ascent of sap refers _________

(a)

cavitation in phloem

(b)

gas bubble replacing the water in xylem

(c)

disappearance of gas from xylem

(d)

undisturbed water column

A plant growing in a tree as epiphyte accumulates malic acid in dark and cells contains large storage vacuoles. Identify the of type of pathway that takes place in this plant.

(a)

C₄pathway

(b)

Glycolate Metabolic pathway

(c)

Di carboxylic acid pathway

(d)

CAM pathway

Seed dormancy allows the plants to

(a)

overcome unfavourable climatic conditions

(b)

develop healthy seeds

(c)

reduce viability

(d)

prevent deterioration of seeds

What do you infer from the term pycnoxylic?

Describe the Shapes of apopetalous actinomorphic in corolla.

Define mesokaryotes.

Why are Echinoderms so-called?

Name the visual units of the compound eyes of cockroach.

Which type of WBC increase in its amount during allergic reactions? Write a few words of it.

What vessels carry blood to the kidneys? Is this blood arterial or venous?

Name the filaments present in the sarcomere.

What happens to the drones after mating flight?

Explain "Sunken Stomata"?

Write the role of nitrogenase enzyme in nitrogen fixation? 

What is 'Agent orange'?

Who is called as founder of modern bacteriology? Mention his contribution?

Explain the different types of placentation with example.

Write a short note on Chitin.

Give the location of clitellum and spermathecal openings in Lampito mauritii.

Define BMI with example.

Which segment is the site of secretion and regulated reabsorption of ions and pH homeostasis?

What is the significance of melanin?

What are the Nutritive values of fishes?

How are barks classified?

Name the plant growth regulators?

1. With a neat labelled diagram explain the ultra structure of a bacterial cell.

2. What is the significance of Molecular taxonomy?

1. How respiration takes place in cockroach?

2. What does the following term defines.
   (i) Heart beat
   (ii) Systole 
   (iii) Diastole
   (iv) 'Iub' and 'dub' sound of the heart
   (v) Cardiac cycle.

1. Identify the biological term
   Excretion, glomerulus, urinary bladder, glomerular filtrate, ureters,urine, Bowman’s capsule, urinary system, reabsorption, micturition, osmosis, proteins.
   a. A liquid which gathers in the bladder.
   b. Produced when blood is filtered in a Bowman’s capsule.
   c. Temporary storage of urine.
   d. A ball of inter twined capillaries.
   e. Removal of unwanted substances from the body.
   f. Each contains a glomerulus.
   g. Carry urine from the kidneys to the bladder.
   h. Scientific term for urination.
   i. Regulation of water and dissolved substances in blood and tissue fluid.
   j. Consists of the kidneys, ureters and bladder.
   k. Removal of useful substances from glomerular filtrate.
   l. What solute the blood contains that are not present in the glomerular filtrate?

2. Write the causes for diabetes mellitus and diabetes insipidus.

1. Explain the process of photo respiration / C2 cycle.

2. Describe the mechanism of photoperiodic induction of flowering.