CBSE Class 11 Biology Plant Growth and Development Quiz 1

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CBSE › Class 11 › Biology › Plant Growth and Development

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1. Mechanism of development was explained by

A Hans Dietrisch B Spemann C Both a and b D Haemmerling

2. Intercalary meristems are of

A Permanent nature B Temporary nature C Some are permanent some temporary D None of these

3. Cells of fibers and tracheids elongate during

A Phase of cell division B Phase of cell elongation C Phase of cell maturation D Phase of cell differentiation

4. Typical plant growth shows _________ curve.

A J-shaped B S-shaped C I-shaped D Parabolic

5. Exponential growth of the plants is express as W

A ability of the plant to produce new cells B efficiency index C relative growth rate D all of the above

6. Opening of floral buds into flowers, is a type of:

A Autonomic movement of variation B Autonomic movement of locomotion C Autonomic movement of growth D Paratonic movement of growth

7. Which one is incorrect?

A Epiblast is presumptive ectoderm and mesoderm B Hypoblast is presumptive endoderm C Hypoblast is presumptive mesoderm D Upper layer of cells in blastoderm is epiblast

8. The stage of rapid cell division just after fertilization is

A Organogenesis B Cleavage C Gastrulation D Growth

9. Plants grow throughout their life due to

A presence of meristems B presence of vascular cambium C presence of xylem and phloem D presence of tracheids

10. Liver and pancreas arise from

A Foregut B Midgut C Hindgut D None of these

Practice more on Plant Growth and Development

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