Q. No.A typical angiosperm anther is:
1. Bilobed and polythecous
2. Unilobed and monothecous
3. Multilobed and monothecous
4. Bilobed and dithecous
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.
What is true about the vegetative cell in the pollen tube?
| 1. | It is smaller than the generative cell |
| 2. | It has an irregular shaped nucleus |
| 3. | It floats in the cytoplasm of the generative cell |
| 4. | It has a dense cytoplasm lacking food reserves |
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 a multicarpellary syncarpous ovary:
| 1. | There is more than one pistil that is fused with the other |
| 2. | There is more than one pistil that is free from each other |
| 3. | There is one pistil that is fused with the stamen |
| 4. | There is more than one pistil that is fused with the stamen |
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.
Match the structure in COLUMN I with the description in COLUMN II and choose your answer from the codes given below:
| Column I | Column II | ||
| A. | Stigma | a. | Landing platform for pollen grains |
| B. | Ovary | b. | Basal bulged part of the pistil |
| C. | Placenta | c. | Part of the ovary where funiculus attaches |
| D. | Ovule | d. | Megasporangium |
Codes
| A | B | C | D | |
| 1. | a | b | c | d |
| 2. | a | c | b | d |
| 3. | b | a | d | c |
| 4. | d | c | b | a |
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 only type of pollination which during pollination brings a genetically different type of pollen grains to the stigma is:
| 1. | Chasmogamy | 2. | Cleistogamy |
| 3. | Geitonogamy | 4. | Xenogamy |
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.
© 2024 GoodEd Technologies Pvt. Ltd.