Biology questions
20584 published questions with worked solutions.
- First three of layers of microsporangium which does the function of protection are
- Pollens outer layer is called __A__. This is made up of __B__. This is absent on the __C__. Here, A, B and C refer to
- Pollens have two prominent walls which are __A__ and __B__. Here A and B refers to
- Consider the following statement. 1. Pollen tablets are largely available in the market of Western countries. 2. Pollen...
- Which of the following are the important floral rewards to the animal pollinators?
- Epihydrophily occurs in
- There are 10 flowers in one individual plant of Crotalaria. In each microsporangium of every stamen of all the flowers, there are...
- Which of the following statements is not true about pollen grains?
- Complete the following flow chart. Pollen mother cells -(A)-> Pollen grain -> Vegetative cell -> __B__ Choose the correct option...
- The ovule in which the funicle, chalaza and micropyle lie in one vertical plane is called
- Chalazal pole is present
- Megasporogenesis is
- A micropyle is a
- Single megasporic development is called
- Two nuclei with one cell are found in
- The number of nuclei at the chalazal end is
- PEC (Primary Endosperm Cell) is formed
- In embryo sac, the number of synergid, egg cell, central cell and antipodal cell follows the order
- During the formation of embryo sac, the functional megaspore undergoes
- Indicate the stage (I, II or III) where meiosis occurs in the flow chart. Megaspore mother cell -(I)-> Megaspores -(II)-> Embryo...