Factors Affecting Plant Growth
Trending Questions
Q.
Match of following columns
column-Icolumn-IIA.Water1.Release of metabolic energyB.Oxygen2.Optimum enzymatic activityC.Nutrients3.Cell enlargement/turgidityD.Temperature4.Synthesis of protoplasm
A - 3 , B - 4 , C - 2 , D - 1
A - 1, B - 2 , C - 3, D - 4
A - 4 , B - 3 , C - 2 , D - 1
A - 3 , B - 1 , C - 4 , D - 2
Q.
Few normal seedlings of tomato were kept in a dark room. After a few days, they were found to have become white-colored like albinos. Which of the following terms will you use to describe them?
Mutated
Embolised
Etiolated
Defoliated
Q. Match of factors affecting growth to their functions.
- Nutrient transport
- Enzymatic activity
- Respiration
- Functional
activities
Q. Growth is primarily affected by two climatic factors which are
- light and temperature
- light and soil nitrogen
- wind and soil
- Humidity and phytohormones
Q. Select out the incorrect match with respect to plant growth requirements among the following:
- Water → Cell metabolism
- Minerals → Osmotic regulation
- Oxygen → Enzyme activation
- Light → Flowering
Q. Assertion :- Oxygen is compulsory for growth of all organisms.
Reason:- Oxygen is must for releasing metabolic energy essential for growth.
Reason:- Oxygen is must for releasing metabolic energy essential for growth.
- Both assertion and reason are true and reason is the correct explanation of assertion
- The assertion is true but reason is false
- Both assertion and reason are true but reason is not the correct explanation of assertion
- Both assertion and reason are false
Q. Assertion: Plant growth and development is intimately linked with the water status of plant cells.
Reason: Guttation is the process of water loss from hydathodes.
Reason: Guttation is the process of water loss from hydathodes.
- Both assertion and reason are true and reason is the correct explanation of assertion
- The assertion is true but reason is false
- Both assertion and reason are true but reason is not the correct explanation of assertion
- Both assertion and reason are false
Q. In sigmoid growth curve, the exponential phase slows down leading to a stationary phase due to
- halting of respiration
- genetic nature
- limited nutrient supply
- absence of differentiation
Q. Leaves of many grasses are capable of folding and unfolding because they
- are very thin
- are isobilateral
- have specialized bulliform cells
- have parallel vascular bundles
Q. Which of the following is not an example for plant growth?
- The length of a wooden log thrown in a river increases by 1 centimeter
- Annual ring formation
- Formation of cambium
- A plant of 1m in length becomes a 2m long plant