In angiosperms, the mature female gametophyte is represented by:
1. | Nucellus | 2. | Megaspore |
3. | MMC | 4. | Embryosac |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
A typical angiosperm embryosac, at maturity, is:
1. | 8 celled and 8 nucleate | 2. | 8 celled and 7 nucleate |
3. | 7 celled and 8 nucleate | 4. | 7 celled and 7 nucleate |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Which of the following is not used by flowering plants as an outbreeding device?
1. | Lack of synchronization between pollen release and stigma receptivity. |
2. | Anther and Stigma placed at different levels. |
3. | Self-incompatibility. |
4. | Production of bisexual flowers. |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
The pollen tube releases the two male gametes first into:
1. The vicinity of the egg cell.
2. The vicinity of polar nuclei.
3. In the cytoplasm of synergids.
4. In the cytoplasm of antipodals.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
A typical angiosperm anther is:
1. Bilobed and polythecous
2. Unilobed and monothecous
3. Multilobed and monothecous
4. Bilobed and dithecous
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
When the embryosac develops from a single functional megaspore [the other three get generate], it is called as:
1. | Monosporic | 2. | Bisporic |
3. | Trisporic | 4. | Tetrasporic |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Geitonogamy is:
1. | Functionally cross–pollination but genetically autogamy |
2. | Functionally autogamy but genetically cross-pollination |
3. | Functionally and genetically autogamy |
4. | Functionally and genetically cross-pollination |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Which of the following is/are a marine plant pollinated by water?
1. | Vallisneria | 2. | Hydrilla |
3. | Zostera | 4. | Both 1 and 2 |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
In angiosperms, triple fusion results in the formation of:
1. | Zygote | 2. | Endosperm |
3. | Nucellus | 4. | PEC |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Identify the incorrect statement regarding Parthenium hysterophorus:
1. | Its pollens are a very common cause of severe respiratory allergies. |
2. | It was introduced in India accidentally as a contaminant in wheat. |
3. | It is a native of tropical America |
4. | It is non-invasive and limited to certain pockets in India only |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.