This practice test includes 25 important MCQ questions from the chapter Transport In Plants, Class 11th biology.
Transport in Plants : Biology ( class 11th ) Revision Test | MCQs for NEET
Score: 0 / 25
Questions
Q1. Dry seeds kept in water swell due to
imbibition is a type of diffusion in which water is absorbed by solids or colloids which leads to increase in volume. This happens in case of dry wood and seeds
Q2. Choose the correct statement/statements. Pumps in active transport are A. Lipids that bind molecules to pass them through the membrane. B. Transport molecules uphill. C. These are specific transporters. D. These are sensitive to inhibitors
Pumps in active transport are proteins that bind molecules to pass them through the membrane
Q3. Which of the following is the unit of ψ?
Psi or ψ is expressed in pressure units e.g. pascals
Q4. Two cells A and B are contiguous. Cell A has osmotic pressure 10 atm, turgor pressure 7 atm and diffusion pressure deficit 3 atm. Cell B has osmotic pressure 8 atm, turgor pressure 3 atm and diffusion pressure deficit 5 atm. The result will be
Movement of water from cell A to B
Q5. Which of the following is decreased during increase in humidity in the atmosphere?
With the increase in humidity in atmosphere, rate of transpiration decreases
Q6. Ψs is always
Ψs is always negative
Q7. Two types of molecules cross the membrane in the same direction, it is called as
In symport, two types of molecules cross the membrane in the same direction
Q8. Diffusion rate is affected by
Diffusion rate is affected by the gradient of concentration, permeability of the membrane separating them, temperature and pressure
Q9. Cells shrink in _________ solution
In hypertonic solution, external solution is more concentrated as compared to cytoplasm.Cells shrink in hypertonic solutions
Q10. Which of the following is true about diffusion?
Diffusion is a slow process, it is not dependent on the living systems
Q11. Which of the following is true about diffusion?
Diffusion is a slow process, it is not dependent on the living systems.
Q12. Water is lost in a liquid state in some plants through hydathodes. These hydathodes
remain always open
Q13. If pressure greater than atmospheric pressure is applied to pure water, the water potential
If a pressure greater than atmospheric pressure is applied to pure water, the water potential increases.
Q14. Choose the correct sequence of water movement in the plants.
Water is absorbed from soil by root hair. This is then carried by cortex,then passed to endodermis.Endodermis passes water to Perivale then to protoxylem and metaxylem
Q15. Wilting of a plant results from excessive
Q16. Cohesion theory of water movement in plants was put forth by
Q17. Diffusion rate is affected by
Diffusion rate is affected by the gradient of concentration, permeability of the membrane separating them, temperature and pressure
Q18. When a plant is girdled (ringed)
the root dies first
Q19. Choose the correct statement/statements. Pumps in active transport are A. Lipids that bind molecules to pass them through the membrane. B. Transport molecules uphill. C. These are specific transporters. D. These are sensitive to inhibitors
Pumps in active transport are proteins that bind molecules to pass them through the membrane.
Q20. Assertion (A): K+ ion accumulation found in Nitella depends on its respiratory activity. Reason (R)Absorption of all ions in plants completely depends on the usage of metabolic energy. The correct answer is
Q21. Root hairs absorb water from soil with the help of
Q22. Proteins that form huge pores in the membrane of the certain organelles and bacteria are called as
Porins
Q23. What is the effect of turgor pressure in Munch hypothesis?
Increase of turgor pressure
Q24. Munch hypothesis is based on
Translocation of food due to turgor pressure gradient
Q25. ψp denotes to
Pressure potential
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