Biology

Plant Transport and Physiology

1,834 Questions

Access a comprehensive set of questions on plant transport mechanisms and physiological adaptations. Topics include water movement, translocation of food, and plant responses to external stimuli. These biology questions are essential for medical entrance exams and other science competitive tests.

Xylem and phloem transportTranspiration and evaporationPlant adaptationsGeotropic and phototropic responsesWater absorption by rootsRespiration in roots

Plant Transport and Physiology Questions

Multiple choice

What is a technique of feeding plants by applying liquid fertiliser directly to their leaves called?

  1. Foliar feeding

  2. Irrigation

  3. leaf sensor

  4. Deficit irrigation

  5. Nano Ganesh
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Foliar feeding is a technique of feeding plants by applying liquid fertiliser directly to their leaves. Plants are able to absorb essential elements through their leaves. The absorption takes place through their stomata and also through their epidermis. Transport is usually faster through the stomata, but total absorption may be as great through the epidermis. Plants are also able to absorb nutrients through their bark.

Multiple choice

How do insects affect crop plants?

  1. By sucking food and water from plant bodies

  2. By cutting roots, stems and leaves of plants

  3. By getting into fruits and destroying them

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Insects affect crop plants by sucking food and water from plant bodies, cutting roots, stems and leaves of plants, and also by getting into fruits and destroying them.

Multiple choice

The soil water which is of the greatest importance to the plant life is

  1. Gravitational water

  2. Capillary water

  3. Hygroscopic water

  4. Combined water
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Capillary water is held in the soil pores against gravity and is the primary source of water available for plant root absorption. Gravitational water drains away, while hygroscopic and combined water are held too tightly by soil particles for plants to extract.

Multiple choice

Which of the following is not an adaptation of desert plants?

  1. They have a waxy coating on leaves.

  2. Leaves are modified into spines.

  3. Photosynthesis occurs in the leaves.

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Photosynthesis occurs in stems of the desert plants. They increase in size and become spongy to carry out the process of photosynthesis.

Multiple choice

In a plant cell, OP is equal to

  1. Diffusion Pressure Deficit + Turgor Pressure

  2. Diffusion Pressure Deficit - Turgor Pressure

  3. Turgor Pressure - Diffusion Pressure Deficit

  4. Turgor Pressure - Diffusion Pressure
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In a plant cell, OP is equal to Diffusion Pressure Deficit + Turgor Pressure.

Multiple choice

Which of the following statements is incorrect?

  1. Water and inorganic salts are taken simultaneously by root hairs

  2. Plants take in small quantity of mineral salts through soil water

  3. Roots are the main absorbing organs of plants

  4. Plants absorb only one thing at a time, water or inorganic salts
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Option (4) is incorrect option as plants aborb both water and minerals at the same time.

Multiple choice

The principal pathway by which water is translocated in angiosperms is

  1. xylem vessel system

  2. sieve tubes members of phloem

  3. xylems and phloem

  4. sieve cells of phloem
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Translocation is movement of material from leaves to other issues throughout the plant. Tissue in which nutrient move is phloem. Translocation in angiosperm(flouring plant) is approximate 1 meter per hour & the pathway by which water is translocated in angiosperms is called xylem vessel system.

Multiple choice

If the cut end of a tree is put in eosin solution, then the

  1. leaves remain fresh, but ascent of sap stops

  2. phloem gets colored because of ascent of sap

  3. xylem elements get stained showing ascent of sap

  4. ascent of sap stops
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

If the cut end of tree is put in eosin solution then the water will come in upward movement from root to aerial parts of the plant body and this is called translocation of water or as cent of rap & xylem .