NEET Biology: Questions 479 - 483 of 3146

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 3146 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 700.00 or

Question number: 479

» Genetics and Evolution » Molecular Basis of Inheritance » DNA Replication

MCQ▾

Question

Semiconservative model of DNA replication was proposed by which workers in eukayotes?

Choices

Choice (4) Response

a.

Messelson and Stahl

b.

Taylor, Woods and Huges

c.

Watson and Crick

d.

Nirenberg and Khorana

Question number: 480

» Reproduction » Sexual Reproduction in Flowering Plants » Pollination-Types, Agencies and Examples

MCQ▾

Question

Dichogamy which helps in cross pollination is a floral mechanism in which

Choices

Choice (4) Response

a.

Anther and stigma mature at different times.

b.

Pollen grain is unable to germinate on the stigma of the same flower.

c.

Pollen sac and stigma are at different heights.

d.

Structure of pollen sac and stigma functions as hurdles.

Question number: 481

» Plant Physiology » Transport in Plants » Movement of Water, Gases and Nutrients

MCQ▾

Question

The cell wall is permeable and not a semipermeable structure can be best deduced from the passage of water and mineral salts from

Choices

Choice (4) Response

a.

Root hairs to cortical cells.

b.

Soil into periplasmic space of root hairs.

c.

Cortical cells to pericycle.

d.

Pericycle to trachea.

Question number: 482

» Diversity in Living World » Five Kingdom Classification » Protista

MCQ▾

Question

Two species of Amoeba X and Y were kept in fresh water and got adapted. Species X developed contractile vacuole.

Choices

Choice (4) Response

a.

X and Y are marine species.

b.

Species Y is marine and X is fresh water.

c.

X and Y are fresh water.

d.

Species X is marine and Y is fresh water.

Question number: 483

» Diversity in Living World » Five Kingdom Classification » Plant Group - Pteridophytes

MCQ▾

Question

Which of the following helps in coal formation?

Choices

Choice (4) Response

a.

Pteridophytes

b.

Bacteria

c.

Gymnosperm

d.

Archaebacteria

Sign In