Name the parts of an angiosperm flower in which development of male and female gametophyte take place.
Solution and Explanation
The male gametophyte or the pollen grain develops inside the pollen chamber of the anther, whereas the female gametophyte (also known as the embryo sac) develops inside the nucleus of the ovule from the functional megaspore.
Top Questions on sexual reproduction in flowering plants
The following question is based on pollination. Study the figures carefully and answer the questions that follow.
- Give the scientific terms for the processes taking place in Figures A and B respectively.
- Mention two conditions necessary for the process occurring in Figure B.
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- [(i)] State one advantage and one disadvantage of the process occurring in Figure B.
OR - [(ii)] Name one plant where, in some flowers only, the process in Figure B takes place and give the reason responsible for it.
- [(i)] State one advantage and one disadvantage of the process occurring in Figure B.
- CBSE CLASS XII - 2025
- Biology
- sexual reproduction in flowering plants
- Assertion (A): Apple is false fruit.
Reason (R): Thalamus also contributes to fruit formation in apple.- CBSE Compartment XII - 2025
- Biology
- sexual reproduction in flowering plants
- In which of the following plants are both male and female flowers born on the same plant and the mode of pollination can be geitonogamy or xenogamy?
- CBSE Compartment XII - 2025
- Biology
- sexual reproduction in flowering plants
- Long ribbon-like pollen grains are seen in some:
- CBSE Compartment XII - 2025
- Biology
- sexual reproduction in flowering plants
Flowering plants with hermaphrodite flowers have developed many reproductive strategies to ensure cross-pollination. Study the given outbreeding devices adopted by certain flowering plants and answer the questions that follow.
Note : All plants belong to the same species. No pollen tube growth/inhibition of pollen germination on stigma. Pollen germination on stigma.- [(a)] Name and define the outbreeding device described in the above table.
- [(b)] Explain what would have been the disadvantage to the plant in the absence of the given strategy.
- CBSE CLASS XII - 2025
- Biology
- sexual reproduction in flowering plants
Questions Asked in CBSE CLASS XII exam
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- CBSE CLASS XII - 2025
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- If \( \int \frac{1}{2x^2} \, dx = k \cdot 2x + C \), then \( k \) is equal to:
- CBSE CLASS XII - 2025
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- Let \( A = \begin{bmatrix} 1 & -2 & -1 \\ 0 & 4 & -1 \\ -3 & 2 & 1 \end{bmatrix}, B = \begin{bmatrix} -5 \\ -2 \end{bmatrix}, C = [9 \ \ 7], \) which of the following is defined?
- Identify, which of the following is not to be considered while estimating Revenue Deficit of a country.
- CBSE CLASS XII - 2025
- Government Budgeting
- Figure shows variation of Coulomb force (F) acting between two point charges with \( \frac{1}{r^2} \), \( r \) being the separation between the two charges \( (q_1, q_2) \) and \( (q_2, q_3) \). If \( q_2 \) is positive and least in magnitude, then the magnitudes of \( q_1, q_2 \), and \( q_3 \) are such that:
- CBSE CLASS XII - 2025
- Electrostatics
Concepts Used:
Angiosperms
A type of plant belonging to the kingdom Plantae is angiosperms. The term Angiosperm is acquired from two Greek words: Angio - ‘covered’ and Sperma - ‘seed’. They are the types of plants that contain flowers which is a well-defined feature and the seeds are enfolded within the fruits. Since they can bear both flowers and seeds are also called flowering plants, and also comprises around 80% of the living plants.
The Characteristics of Angiosperms are:
- The body of an angiosperm is evidently differentiated into several organs such as leaves, flowers, fruits, roots, stems, and seeds.
- Among these organs the decision of labor is well-coordinated, and each organ is peerlessly specialized for specific functions.
- Out of all angiosperms, most of them are herbs, shrubs, trees, climbers, etc.
- A vessel is the chief water and mineral that conducts Xylem elements.
- The sieve tube is the chief food that conducts Phloem elements.
- Endosperm has triploid cells.
- The angiosperms are basically divided into two groups, based on the presence of the number of cotyledons in the seed. They are
- Dicotyledonous or Dicot plants
- Monocotyledonous or Monocots Plants