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NEET Biology Solved Question Paper 2012

Multiple Choice Questions

Which of the following is correct regarding respiration in adult frog

In water- Skin, gills
On land - Skin, buccal cavity
In water- Skin, buccal cavity
On land- Skin, lungs, gills

Which of the following is correctly matched

Monstera- Fibrous root
Dahlin- Fasciculated root
Azadirachta- Adventitious root
Basil- Prop roots

Deuteromycetes are known as fungi imperfecti because

their zygote undergoes meroblastic and holoblastic cleavage
only asexual stages are known
they have aseptate myceliun
they are autotrophic

Abscisic acid is known as the stress hormone because it

breaks seed dormancy
induces flowering
promotes leaf fall
promotes closure of stomata

One of the world's most poisonous fish toxins is released by

clown fish
eel fish
sword fish
puffer fish

Na⁺/K⁺ pump is associated with

passive transport
active transport
osmosis
imbibition

Photorespiration shows formation of

sugar but not ATP
ATP but not sugar
both ATP and sugar
neither ATP nor sugar

8.
The microscope usually used for seeing living cells or tissues is

compound microscope

electron micrscope

phase contrast microscope

light microscope.

phase contrast microscope

Phase contrast microscope was developed by Zemicke (1935, Nobel Prize 1953) to observe living cells and the events occurring in them (e.g., Spindle formation, movement of chromosomes, endocytosis, exocytosis). It is similar to optical microscope except that it has an annular diaphragm in the condenser and a transparent phase plate at the back focal plane of objective. The microscope converts differences in refractive indices into differences in brightness.