alleryStart learning →Which of these is a long day plant?
- Cocklebur
- Wheat
- Aster
- Dahlia
Show answer and solution
Correct answer: B. Wheat
Wheat flowers in summer under long days, whereas dahlia, aster and cocklebur are short day plants.
MHT-CET Plant Growth and Mineral Nutrition — practice questions — page 3
Explore 87 free Plant Growth and Mineral Nutrition questions in MHT-CET Biology. Open each question or exercise to read its content, reference answers and available explanation.
Practise Plant Growth and Mineral Nutrition with Quill →Plant Growth and Mineral Nutrition questions and exercises with answers
Showing questions 61–87 of 87.
Which of these is a long day plant?Read the answer and worked solution →Why are short day plants also called long night plants?Read the answer and worked solution →What happens if the dark period of a short day plant is broken by a flash of light?Read the answer and worked solution →A flash of which light in the dark period inhibits flowering of SD plants?Read the answer and worked solution →Which form of phytochrome accumulates in plants during the day?Read the answer and worked solution →During the dark period, phytochrome Pfr changes into which form?Read the answer and worked solution →Who coined the term vernalization in 1928?Read the answer and worked solution →Vernalization is the promotion of flowering by which treatment?Read the answer and worked solution →Seeds are vernalized at which temperature for one to one and half months?Read the answer and worked solution →The site of vernalization is believed to be the?Read the answer and worked solution →Which plant groups commonly need cold treatment before flowering?Read the answer and worked solution →In which form does carbon enter the plant?Read the answer and worked solution →Who proposed the criteria of essentiality of elements in 1939?Read the answer and worked solution →Which law states that crop yield depends on the scarcest essential element?Read the answer and worked solution →The concentration below which plant growth is retarded is called?Read the answer and worked solution →Deficiency symptoms first appear in young tissues for which element?Read the answer and worked solution →Loss of chlorophyll resulting in yellowing of leaves is called?Read the answer and worked solution →Localised death of leaf tissue due to mineral deficiency is called?Read the answer and worked solution →Patches of green and non-green areas on leaves are called?Read the answer and worked solution →Microelements are needed only in traces because they act as?Read the answer and worked solution →Which element is a constituent of chlorophyll?Read the answer and worked solution →Brown heart disease results from deficiency of which element?Read the answer and worked solution →Which element is needed for the synthesis of auxin?Read the answer and worked solution →Calcium is a component of which part of the cell wall?Read the answer and worked solution →Passive absorption of minerals takes place without what?Read the answer and worked solution →Uptake of mineral ions against a concentration gradient is called?Read the answer and worked solution →Which concept explains passive uptake due to fixed anions inside cells?Read the answer and worked solution →
Worked practice questions
Why are short day plants also called long night plants?
- They flower only at noon
- They need a long dark spell
- They avoid all darkness
- They need constant light
Show answer and solution
Correct answer: B. They need a long dark spell
Flowering of these plants depends on a long uninterrupted dark period.
What happens if the dark period of a short day plant is broken by a flash of light?
- It becomes dormant
- It turns day neutral
- It flowers early
- It does not flower
Show answer and solution
Correct answer: D. It does not flower
The long night is essential, so even a brief flash prevents flowering in SDP.
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