166816
Necessary conditions for seed germination is
1 light and $\mathrm{O}_{2}$
2 light and high temperature
3 vernalization and scarification
4 water and $\mathrm{O}_{2}$
Explanation:
D Water, oxygen, and proper temperature are essential conditions for seed germination. Some seeds require proper light also. Some germinate better in full light while other requires darkness to germinate. When a seed is exposed to the proper conditions, water and oxygen are taken in through the seed coat.
[UP CPMT-2005]
Plant growth and development
166820
Rapid and dramatic increase in shoot length is called
1 Triple response growth
2 Bolting
3 Scarification
4 Night break effect
Explanation:
B Bolting is called rapid and dramatic increase in shoot length. It is seen in flowering plant during long day condition. It can artificially be induced by application of gibberellic acid. It requires either long day or cold treatment.
166816
Necessary conditions for seed germination is
1 light and $\mathrm{O}_{2}$
2 light and high temperature
3 vernalization and scarification
4 water and $\mathrm{O}_{2}$
Explanation:
D Water, oxygen, and proper temperature are essential conditions for seed germination. Some seeds require proper light also. Some germinate better in full light while other requires darkness to germinate. When a seed is exposed to the proper conditions, water and oxygen are taken in through the seed coat.
[UP CPMT-2005]
Plant growth and development
166820
Rapid and dramatic increase in shoot length is called
1 Triple response growth
2 Bolting
3 Scarification
4 Night break effect
Explanation:
B Bolting is called rapid and dramatic increase in shoot length. It is seen in flowering plant during long day condition. It can artificially be induced by application of gibberellic acid. It requires either long day or cold treatment.
