NEET Biology: Questions 1143 - 1148 of 3146

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Question number: 1143

» Genetics and Evolution » Heredity and Variation » Sex Determination-in Humans, Birds, Honey Bee

MCQ▾

Question

The theory where ratio between the number of X- chromosomes and number of complete sets of autosomes will determine the sex is known as

Choices

Choice (4) Response

a.

Environment sex determination theory.

b.

Hormone balance theory of sex determination.

c.

Genic balance theory of sex determination.

d.

Chromosome theory of sex determination.

Question number: 1144

» Structural Organization in Animals and Plants » Plant Tissues - Morphology, Anatomy and Functions » Flower

MCQ▾

Question

When to of the sepals or petals are outer, two are inner and one is partly outer partly inner, this condition is known as

Choices

Choice (4) Response

a.

imbricate aestivation

b.

valvate aestivation

c.

twisted aestivation

d.

quincuntial aestivation

Question number: 1145

» Cell Structure and Function » Cell and Cell Theory

MCQ▾

Question

Which one of the following is the largest unicellular organism?

Choices

Choice (4) Response

a.

Acetabularia

b.

Planaria

c.

Volvox

d.

Blue green algae

Question number: 1146

» Biotechnology and Its Applications » Application of Biotechnology in Health and Agriculture

MCQ▾

Question

In which bacteria by the use of biotechnology the production of B12 vitamin has been increased to about 20, 000 times?

Choices

Choice (4) Response

a.

Pseudomonas denitrificans

b.

E. coli

c.

Propionibacterium shermanii

d.

Ashbya gossypi

Question number: 1147

» Human Physiology » Digestion and Absorption » Role of Digestive Enzymes and Gastrointestinal Hormones

MCQ▾

Question

Which one of the following does not produce any digestive enzyme?

Choices

Choice (4) Response

a.

Intestinal mucosa

b.

Pancreas

c.

Gastric mucosa

d.

Liver

Question number: 1148

» Structural Organization in Animals and Plants » Plant Tissues - Morphology, Anatomy and Functions » Root

MCQ▾

Question

Monocot root differs from dicot root in having

Choices

Choice (4) Response

a.

Open vascular bundles.

b.

Scattered vascular bundles.

c.

Well developed pith.

d.

Radially arranged vascular bundles.

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