The uptake of water in plants involves__________?

Related Mcqs:

1. Symbionts which help plants in uptake of phosphorous and trace metals such as zinc and copper.

   A. Bacteria
   B. Viruses
   C. Fungi
   D. Cyanobacteria

2. The site/s where most of the uptake of water and minerals take place is/are__________?

   A. Root hairs
   B. Root cells
   C. Underground stem
   D. All of these

3. Abscisic acid promotes flowering in short day plants and inhibits in long day plants, which of the following is antagonistic to abscisic acid in terms of flowering______________?

   A. Gibberellins
   B. Cytokinins
   C. Auxins
   D. Ethene.

4. Epiphytes are plants which depend on other plants for________?

   A. food
   B. mechanical support
   C. shade
   D. None of these

   Submitted by: Tauqeer Ahmad Rajput

5. The movement of water molecules from a region of higher water potential to a region of lower water potential (through membrane)

   A. Deffusion
   B. Osmosis
   C. Active transport
   D. None of these

6. In plants, water potential is determined by major factors?

   A. Three
   B. Four
   C. Two
   D. Five

7. Commonly in other plants than tall ones the speed of upward movement of water is____________?

   A. 8mh-1
   B. 1 mh-1
   C. 7 mh-1
   D. 4 mh-1

8. Which of the following fish drink large amount of sea water and excrete concentrated urine resulting in maximum salt excretion and minimal water loss?

   A. Hagfish
   B. Fresh water fishes
   C. Bony fishes
   D. None of these

9. Mammalian kidney, under restricted water supply can conserve water by over ________ % reabsorption of glomerular filtrate

   A. 80.50%
   B. 90.50%
   C. 95.50%
   D. 99.50%

10. Water potential of pure water is__________?

    A. zero
    B. one
    C. negative
    D. two

    Submitted by: Maryam Aftab