Biology

Plant Transport and Physiology

2,012 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

The root system of a plant is

  1. positively geotropic

  2. negatively phototropic

  3. not sensitive to gravity and sun

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

Ans - 2

Multiple choice

Growth in living things is

  1. permanent and irreversible

  2. temporary and irreversible

  3. permanent and reversible

  4. temporary and reversible
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Growth in living things is permanent and irreversible.

Multiple choice

Among the following __________ produces endogenous branches.

  1. Stem

  2. Flower

  3. Roots

  4. Leaves

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In vascular plants, the root is the organ of a plant that typically lies below the surface of the soil. This is not always the case, however, since a root can also be aerial (growing above the ground) or aerating (growing up above the ground or especially above water). It produces endogenous branches.

Multiple choice

Which among the following can be excluded from the functions of roots?

  1. Anchorage

  2. Photosynthesis

  3. Storage

  4. Conduction

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Leaves are the physical platform for the process of photosynthesis. Leaves function to capture carbon dioxide and sunlight to produce carbohydrates (sugar, starch and cellulose [or wood]), while minimizing water loss.

Multiple choice

The _________ consists of lignified, dead fibre sclerenchymatous cells.

  1. Collenchyma

  2. Parenchyma

  3. Pericycle

  4. Endodermis or Starch Sheath

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The pericycle is made up of sclerenchyma cells which are lignified, dead fibre cells . These cells have thick, woody walls and tapering ends. Functions of the Pericycle: It strengthens the stem. It provides protection for the vascular bundles.

Multiple choice

Xylem carries __________.

  1. water

  2. minerals

  3. food materials

  4. both (1) and (2)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Xylem is the vascular tissue in plants that transports water and dissolved minerals from the roots to the leaves through a process called transpiration. The option 'both (1) and (2)' correctly identifies that xylem carries both water (option 1) and minerals (option 2).

Multiple choice

The plants have ______transport systems.

  1. 2

  2. 3

  3. 4

  4. 5
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Plants have two main transport systems: xylem (which transports water and minerals upward from roots to leaves) and phloem (which transports food/sugar downward from leaves to other parts). These are the vascular tissues that form the plant's circulatory system.

Multiple choice

Epidermis is ______ cell thick.

  1. 4 - 5

  2. 3 - 4

  3. 2 - 3

  4. 1 - 2
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The epidermis is typically 1-2 cell layers thick in most plant organs. This outer protective layer covers stems, roots, and leaves.