Daily Olympiad: Science - Reproduction in Plants [20260603]

Solution

Correct: C

Reproduction is the process by which plants (and other living organisms) produce new individuals of their own kind, ensuring the continuation of their species.

Solution

Correct: B

Asexual reproduction is a mode of reproduction that does not involve the fusion of gametes or change in the number of chromosomes. The offspring arise from a single organism and inherit the genes of that parent only. They are genetically identical to the parent.

Solution

Correct: C

Vegetative propagation is a common form of asexual reproduction in plants where new plants grow from vegetative parts like stems (e.g., potato), roots (e.g., sweet potato), or leaves (e.g., Bryophyllum) of the parent plant.

Solution

Correct: C

Bryophyllum plants are unique because they can reproduce vegetatively from their leaves. The notches along the leaf margins develop small plantlets with roots, which can detach and grow into new plants.

Solution

Correct: C

Spore formation is a method of asexual reproduction where an organism produces reproductive cells called spores. These spores are lightweight and can be carried by wind to new places, where they germinate under favorable conditions to grow into new individuals. Ferns and mosses reproduce this way.

Solution

Correct: C

The stamen is the male reproductive part of a flower. It consists of two main parts: the anther, which produces pollen grains, and the filament, which supports the anther.

Solution

Correct: C

The pistil (or carpel) is the female reproductive part of a flower. It typically consists of the stigma, style, and ovary. The ovary contains ovules, which develop into seeds after fertilization.

Solution

Correct: C

Pollination is the crucial step in sexual reproduction of flowering plants. It involves the transfer of pollen, which contains the male gametes, from the anther (male part) to the stigma (female part) of a flower.

Solution

Correct: B

Self-pollination occurs when pollen is transferred from the anther to the stigma of the same flower or to another flower on the same plant. This ensures genetic similarity to the parent plant.

Solution

Correct: C

Following fertilization, the ovary of the flower matures and swells, developing into the fruit. The fruit protects the developing seeds and aids in their dispersal.

Solution

Correct: B

After fertilization, the ovule inside the ovary develops into a seed. The seed contains the embryo of the new plant, along with stored food, and is protected by a seed coat.

Solution

Correct: B

Water is one of the natural agents that can carry pollen from one flower to another, especially in aquatic plants. Other common agents include wind, insects, and animals.

Solution

Correct: C

Fragmentation is a method of asexual reproduction where the body of the parent organism breaks into smaller pieces (fragments), each of which can grow into a new complete organism. Spirogyra, a type of algae, commonly reproduces by fragmentation.

Solution

Correct: C

A seed is a miniature plant in a protective package. It contains an embryo, which is a tiny, undeveloped plant, along with a food reserve to support its initial growth, all enclosed within a protective seed coat.

Solution

Correct: B

Seed dispersal is crucial because it helps seeds travel away from the parent plant. This reduces competition between the parent and offspring for resources like sunlight, water, and nutrients, and allows new plants to colonize new areas, increasing the species' survival chances.