Question:
The ploidy of apomictic embryos developing from the nucellus and antipodal cells respectively would be:
Options:
The ploidy of apomictic embryos developing from the nucellus and antipodal cells respectively would be:
Options:
Options:
Show Hint
Apomixis is a form of asexual reproduction where seeds are formed without fertilization, maintaining the parental genome.
Updated On: Jan 21, 2025
- 2n, 3n
- 2n, n
- 3n, 2n
- n, 2n
Hide Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
- Apomictic embryos from the nucellus are diploid (2n), as nucellus cells are somatic in origin.
- Antipodal cells, being part of the gametophyte, are haploid (n).
- Antipodal cells, being part of the gametophyte, are haploid (n).
Was this answer helpful?
0
0
Top Questions on Assisted Reproductive Technology
Observe the schematic representation of assisted reproductive technology given below:
Identify the most appropriate technique depicted in the above diagram.
- CBSE CLASS XII - 2024
- Biology
- Assisted Reproductive Technology
- (ii) Describe the different steps in the sexual mode of reproduction in the life cycle of a malarial parasite.
- CBSE CLASS XII - 2024
- Biology
- Assisted Reproductive Technology
- Select the option that gives the correct identification of ovum, morula, and blastocyst in a human female reproduction system as shown in the following diagram:
\begin{figure}[h!] \centering \includegraphics[width=0.5\linewidth]{Screenshot 20250115 135817.png} % Replace with the correct path to your image \caption{Human Female Reproductive System} \label{Human Female Reproductive System} \end{figure}- CBSE CLASS XII - 2024
- Biology
- Assisted Reproductive Technology
- Populations evolve to maximise their reproductive fitness in the habitat in which they live. Study the population growth curves shown in the given graph and answer the questions that follow: \begin{figure}[h!] \centering \includegraphics[width=0.5\linewidth]{image.png} % Replace with the correct path to your image \caption{Population Growth Curves} \label{fig:populationgrowth} \end{figure} (a) Identify the growth curves \u2018A\u2019 and \u2018B\u2019.
- CBSE CLASS XII - 2024
- Biology
- Assisted Reproductive Technology
- In a human female, the reproductive phase starts on the onset of puberty and ceases around middle age. Study the graph given below regarding the menstrual cycle and answer the questions that follow:
\begin{figure}[H] % The [H] forces the figure to appear exactly here \centering \includegraphics[width=\textwidth]{Screenshot 2025-01-16 174432.png} % Replace with the actual path to your image \caption{Hormonal regulation and events during the menstrual cycle.} \label{fig:menstrual_cycle} \end{figure} (a) Name the hormones and their source organ, which are responsible for the menstrual cycle at puberty.- CBSE CLASS XII - 2024
- Biology
- Assisted Reproductive Technology
View More Questions
Questions Asked in CBSE CLASS XII exam
- Two conductors A and B of the same material have their lengths in the ratio 1:2 and radii in the ratio 2:3. If they are connected in parallel across a battery, the ratio \( \frac{v_A}{v_B} \) of the drift velocities of electrons in them will be:
- CBSE CLASS XII - 2025
- Current electricity
- Arun, Bashir and Joseph were partners in a firm sharing profits and losses in the ratio of 5 : 3 : 2. They admitted Daksh as a new partner who acquired his share entirely from Arun. If Arun sacrificed \( \frac{1}{5} \)th from his share to Daksh, Daksh's share in the profits of the firm will be :
- CBSE CLASS XII - 2025
- Partnership Accounts
- Consider three metal spherical shells A, B, and C, each of radius \( R \). Each shell has a concentric metal ball of radius \( R/10 \). The spherical shells A, B, and C are given charges \( +6q, -4q, \) and \( 14q \) respectively. Their inner metal balls are also given charges \( -2q, +8q, \) and \( -10q \) respectively. Compare the magnitude of the electric fields due to shells A, B, and C at a distance \( 3R \) from their centers.
- CBSE CLASS XII - 2025
- Electrostatics
- A 1 cm segment of a wire lying along the x-axis carries a current of 0.5 A along the \( +x \)-direction. A magnetic field \( \mathbf{B} = (0.4 \, \text{mT}) \hat{j + (0.6 \, \text{mT}) \hat{k} \) is switched on in the region. The force acting on the segment is:}
- CBSE CLASS XII - 2025
- Magnetic Effects of Current and Magnetism
A school is organizing a debate competition with participants as speakers and judges. $ S = \{S_1, S_2, S_3, S_4\} $ where $ S = \{S_1, S_2, S_3, S_4\} $ represents the set of speakers. The judges are represented by the set: $ J = \{J_1, J_2, J_3\} $ where $ J = \{J_1, J_2, J_3\} $ represents the set of judges. Each speaker can be assigned only one judge. Let $ R $ be a relation from set $ S $ to $ J $ defined as: $ R = \{(x, y) : \text{speaker } x \text{ is judged by judge } y, x \in S, y \in J\} $.
- CBSE CLASS XII - 2025
- Relations and Functions
View More Questions