Tag: guttation

Questions Related to guttation

Multiple choice biology life processes guttation excretion in plants long distance transport of water

Waste products produced during respiration in plant is/are

  1. CO$ _{2}$
  2. Water

  3. Oxygen

  4. Both A and B

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

  • Like animals, plants also respire all the time because their cells need energy, to stay alive, but plants can only photosynthesize when they are in the light. Photosynthesis happens in the chloroplasts of plant cells. 
  • It produces glucose for use by the plant, and oxygen as a waste product. Respiration uses oxygen and produces carbon dioxide and water as a waste product.

So, the correct answer is option D.

Multiple choice biology through the alimentary canal guttation excretion in plants long distance transport of water

The main waste products of plants are

  1. CO$ _2$ and NO$ _2$.
  2. CO$ _2$ and water vapour.
  3. CO$ _2$, O$ _2$ and water vapour.
  4. None of the above.

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

Plants eliminate some waste through diffusion. During the day, excess oxygen gas produced by photosynthesis is released through the stomata. Carbon dioxide produced by respiration is normally used up during photosynthesis. At night, however, as photosynthesis slows, carbon dioxide is not used up as fast as it is produced, and it is released as a waste product. Plants also release waste water by transpiration and guttation. 

Therefore, the correct answer is option C.

Multiple choice biology through the alimentary canal guttation excretion in plants long distance transport of water

Plants excrete gases through 

  1. Microscopic pores in leaves.

  2. Small porous roots.

  3. Flowers.

  4. Seeds.

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

Plants eliminate some waste through diffusion. During the day, excess oxygen gas produced by photosynthesis is released through the stomata. Stomata are microscopic pores in leaves. Carbon dioxide produced by respiration is normally used up during photosynthesis. At night, however, as photosynthesis slows, carbon dioxide is not used up as fast as it is produced, and it is released as a waste product. Plants also produce oxygen as a by-product of photosynthesis. The oxygen that is not used for respiration is also excreted through the stomata. Plants do not excrete gases through flowers, roots and seeds. 

Therefore, the correct answer is option A.

Multiple choice biology life processes guttation excretion in plants long distance transport of water

Resin canals in Pinus are formed.

  1. By the separation of secretory cells

  2. By the destruction of secretory cells

  3. Partly by separation and partly by destruction of secretary cells

  4. By large intercellular spaces of the cortex of the stem

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

Resin canals in Pinus are lysigenous or schizogenous in origin, but in the context of botanical anatomy, they are typically described as being formed by the separation of secretory cells (schizogenous).

Multiple choice botany transpiration guttation excretion in plants long distance transport of water

Which one of the following is not related to guttation?

  1. Water is given out in the form of droplets

  2. Water given out is impure

  3. Water is given out during daytime

  4. Guttation is of universal occurance

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

In soil rich in moisture content water floods a plant root system. Leaves can retain only a finite amount of water. Excess water i.e xylem sap from the roots is given out through pores or edge of leaves in the form of droplets. This process is called guttation. As this water contains different organic and inorganic substances from the plant it is considered impure. Also, guttation is of universal occurrence. Thus the correct answer is option C.

Multiple choice botany transpiration guttation excretion in plants long distance transport of water

Which condition favors guttation?

  1. High humidity

  2. Low humidity

  3. More transpiration

  4. Bright sunlight

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

Guttation is the phenomenon of the release of small water droplets from the pores of the plants. It is done in order to release the extra water out of the plant in very humid conditions. It is commonly seen in mesophytes.

During the absence of sunlight stomata are closed so there is minimal transpiration. Hence there is a need for guttation.
So the correct answer is 'High humidity'.

Multiple choice botany transpiration guttation excretion in plants long distance transport of water

Loss of water from tips of leaves is 

  1. Transpiration

  2. Guttation

  3. Bleeding

  4. Respiration

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Guttation is the process of loss of impure water from plant infact, mostly from margins of leaves. It occurs when transpiration rate is very low as compared to rate of water absorption. Due to this root pressure is developed and water is pushed out through specialized pores at vein endings called hydathodes. 
So, the correct answer is option B.