The question describes a specific type of asexual reproduction where a multicellular organism breaks into pieces, and each piece develops into a new individual. We need to identify the correct biological term for this process from the given options.
Correct Option: B) Fragmentation is an asexual reproduction process where the body of a simple multicellular organism breaks into smaller pieces, and each piece grows into a new individual. This is a common method seen in organisms like Spirogyra and Planaria.
The question asks for the biological term describing an organism's ability to regrow lost or damaged body parts into a complete new individual, specifically mentioning Planaria as an example. We need to identify the correct biological process from the given options.
Correct Option: D) Regeneration is the process by which an organism replaces or restores lost or damaged body parts. In organisms like Planaria, this ability is highly developed, allowing a fragment to grow into a complete new individual.
The question asks about the asexual reproductive structures of bread mould (Rhizopus). We need to identify the correct term among the given options that describes these microscopic reproductive units.
D) Spores — Bread mould (Rhizopus) reproduces asexually by producing numerous tiny, microscopic reproductive structures called spores. These spores are formed inside a sporangium and are dispersed to grow into new mycelia.
The question asks to identify the organism that characteristically undergoes multiple fission, a type of asexual reproduction where a single parent cell divides into many daughter cells simultaneously. We need to evaluate each option based on its mode of reproduction.
B) Plasmodium (the malarial parasite) — Plasmodium is well-known for undergoing multiple fission (schizogony) in both human liver cells and red blood cells as part of its complex life cycle, producing numerous daughter cells (merozoites) from a single parent cell.
The question asks about the primary mode of asexual reproduction in yeast. Yeast is a unicellular fungus. We need to identify the specific asexual reproductive method it commonly employs from the given options.
Correct Option: A) Budding is the most common method of asexual reproduction in yeast. In this process, a small protuberance (bud) forms on the parent cell, grows, and eventually detaches to become a new, independent yeast cell.
The question asks to identify the asexual method by which new plants like potato and Bryophyllum can grow from existing plant parts (roots, stems, or leaves). We need to recall the definitions of various asexual reproduction methods in plants.
Correct Option: B) Vegetative propagation is the asexual method where new plants develop from the vegetative parts (roots, stems, or leaves) of an existing plant. This perfectly describes the reproduction in potato (from stem tubers) and Bryophyllum (from leaf buds).