Tag: botany

Quizzes (264) Questions (5276)

Questions Related to botany

Multiple choice botany biotechnology and its applications biotechnological regulations pcr asexual modes of reproduction

While purchasing a sealed packet of ghee, one should look for which mark?

  1. ISI

  2. AGMARK

  3. FPO

  4. ISO
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • AGMARK is a certification mark employed on agricultural products in India. 
  • Assuring that they conform to a set of standards approved by the Directorate of Marketing and Inspection. 
  • All agricultural products like grain, milk, dairy product, etc. come under this quality assurance policy. 
  • Ghee is a dairy product and it belongs to agriculture production so it should have AGMARK.
  • So, the answer is option B.
Multiple choice botany biotechnology and its applications biotechnological regulations pcr asexual modes of reproduction

If the fermentation of molasses during the manufacturing of ethyl alcohol is delayed then the conclusion that can drawn is

  1. Molasses is diluted

  2. Molasses is not diluted

  3. More yeast is added

  4. Temperature is maintained around 410 K
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • The sugarcane molasses are generally used as the fermentation medium. 
  • The yeast cells are grown in this medium to perform anaerobic respiration which produces ethanol and carbon dioxide. 
  • The molasses which are used is diluted so that the activity of yeast cells is fast and the production of ethanol occurs at a rapid pace. 
  • If the process is slowed down, then the molasses must not have been diluted before the addition of the fermentation medium in the fermentor.
  • Thus, the correct answer is option B. 
Multiple choice botany breath and blood of life different types of circulatory systems stomata and transpiration transport in organisms

The loss of water from the aerial parts of the plant is known as

  1. Photosynthesis

  2. Transpiration

  3. Reproduction

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

Photosynthesis is the process of synthesis of food from inorganic compounds like carbon dioxide and water and sunlight.

Transpiration is the process of release of water vapour from aerial parts, such as leaves, stems and flowers.
Reproduction is the process of producing an offspring for continuation of species.
Respiration is the process of releasing energy by breaking down organic compounds like sugars.
So, the correct answer is 'Transpiration'.

Multiple choice botany water absorption and ascent of sap in plants apoplast and symplastic pathway transport of water in plants water transport

Rate of water absorption generally follows closely the rate of

  1. Transpiration

  2. Photosynthesis

  3. Respiration

  4. Growth
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The rate of transpiration is high on a bright sunny day. The water is lost from guard cell which leads to decrease in the water potential of guard cell as compared to the surrounding cell. To stabilize the water potential in the guard cell water rushes from the neighboring cell which creates a cohesion pull in the xylem vessels to pull the water up to the guard cell. Thus, the rate of water absorption increases when the transpiration is high. 
So, the correct answer is option A.
Multiple choice botany water absorption and ascent of sap in plants apoplast and symplastic pathway transport of water in plants water transport

Water absorption through roots can be increased by keeping the plants

  1. In the shade

  2. In dim light

  3. Under the fan

  4. Covered with a polythene bag
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • Water absorption through the roots can be increased by keeping the plants under the fan. 
  • As by keeping the plants under the fan, the transpiration process is boosted. Therefore, more amount of water and other minerals are absorbed by the plant roots from the soil. 
  • The more is the rate of evaporation of water from the plants the greater is the rate of transpiration.
  • Hence Water absorption through roots can be increased by keeping the plants under the fan.
  • So, the correct answer is 'Under the fan'.
Multiple choice botany water absorption and ascent of sap in plants apoplast and symplastic pathway transport of water in plants water transport

In root apoplast path of water transport; the water is transported through

  1. Cell wall only

  2. Cell wall and inter cellular spaces

  3. Intercellular spaces

  4. Intercellular spaces, cell walls and endodermis.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The water transport in the apoplastic pathway is through the cell membrane and the intercellular spaces. Water and solutes can pass freely through them.

This happens when water cannot enter the cells due to the presence of Caspian strips. 
So the correct answer is ' Cell wall and intercellular spaces'.

Multiple choice botany water absorption and ascent of sap in plants apoplast and symplastic pathway transport of water in plants water transport

Apoplast is located

  1. Outside the plasma membrane

  2. In the entire cytosol

  3. inside the plasma membrane

  4. In the plastidial content
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In the Apoplast pathway water cannot enter the protoplasm.

It travels through  the space between the cell wall and cell membrane and intercellular spaces.
So the correct answer is 'Outside the plasma membrane'.

Multiple choice botany water absorption and ascent of sap in plants apoplast and symplastic pathway transport of water in plants water transport

The pathway which water moves through cell wall without crossing any membrane

  1. apoplast pathway

  2. symplast pathway

  3. vacuolar pathway

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

The apoplast pathway refers to the movement of water through the cell walls and intercellular spaces without crossing any plasma membranes.

Multiple choice botany water absorption and ascent of sap in plants apoplast and symplastic pathway transport of water in plants water transport

Mark true statement about apoplast pathway.

  1. Apoplast pathway may be aided by cytoplasmic streaming

  2. Apoplast pathway is continuous throughout the plant without any exception

  3. Apoplast pathway is faster than symplast pathway

  4. In Apoplast pathway mass flow of water occurs through plasmodesmata
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Apoplast is the system of cell walls which is continuous throughout the plant except in some parts like Casparian strips in the roots. Therefore it cannot be aided by cytoplasmic streaming and cannot occur through plasmodesmata. So, the correct answer is 'apoplast pathway is faster than the symplast pathway'

Multiple choice botany water absorption and ascent of sap in plants apoplast and symplastic pathway transport of water in plants water transport

Movement of water through the symplast involves crossing the 

  1. Intercellular spaces

  2. Cell wall

  3. Cell membrane

  4. More than one option is correct
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The symplast pathway involves the movement of water through the cytoplasm of cells, which requires crossing the cell membrane to enter and exit cells.