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Answered on 07/04/2024 Learn Unit 1- Reproduction

Nazia Khanum

(i) Agave primarily propagates through offsets or "pups." These are small plantlets that grow around the base of the mature Agave plant. They can be separated and replanted to grow into new individual plants. (ii) Bryophyllum, also known as the mother of thousands or mother of millions, reproduces... read more

(i) Agave primarily propagates through offsets or "pups." These are small plantlets that grow around the base of the mature Agave plant. They can be separated and replanted to grow into new individual plants.

(ii) Bryophyllum, also known as the mother of thousands or mother of millions, reproduces vegetatively through tiny plantlets that develop along the margins of its leaves. These plantlets, once detached from the parent plant, can take root and grow into new individuals.

 
 
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Answered on 07/04/2024 Learn Unit 1- Reproduction

Nazia Khanum

The organism referred to as the "Terror of Bengal" is the Bengal tiger (Panthera tigris tigris).
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Answered on 07/04/2024 Learn Unit 1- Reproduction

Nazia Khanum

Sure, here are examples of fungi that reproduce by budding and by conidia: (i) Budding: Example: Saccharomyces cerevisiae Saccharomyces cerevisiae, commonly known as baker's yeast or brewer's yeast, reproduces predominantly by budding. This fungus is widely used in baking and brewing industries. (ii)... read more

Sure, here are examples of fungi that reproduce by budding and by conidia:

(i) Budding: Example: Saccharomyces cerevisiae Saccharomyces cerevisiae, commonly known as baker's yeast or brewer's yeast, reproduces predominantly by budding. This fungus is widely used in baking and brewing industries.

(ii) Conidia: Example: Aspergillus fumigatus Aspergillus fumigatus is a common mold species that reproduces asexually by producing conidia. These conidia are airborne and can cause respiratory infections in humans, particularly in individuals with compromised immune systems.

 
 
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Answered on 07/04/2024 Learn Unit 1- Reproduction

Nazia Khanum

Sure, here are examples of plants that reproduce through runners and offsets: (i) Runner: Strawberries (Fragaria spp.): Strawberries reproduce through runners, which are also known as stolons. These are horizontal stems that grow along the ground and produce new plants at nodes. As the runner touches... read more

Sure, here are examples of plants that reproduce through runners and offsets:

(i) Runner:

  • Strawberries (Fragaria spp.): Strawberries reproduce through runners, which are also known as stolons. These are horizontal stems that grow along the ground and produce new plants at nodes. As the runner touches the soil, it roots and forms a new plant, which is genetically identical to the parent plant.

(ii) Offset:

  • Hen and Chicks (Sempervivum spp.): Hen and chicks, also known as houseleeks, reproduce through offsets. These are small rosettes that form at the base of the parent plant. As they mature, they can be separated and replanted to grow into new individual plants.
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Answered on 07/04/2024 Learn Unit 1- Reproduction

Nazia Khanum

One example of an organism where cell division serves as a mode of reproduction is the bacteria species called Escherichia coli (E. coli). E. coli reproduces through a process called binary fission, where a single cell divides into two identical daughter cells. This form of reproduction allows E. coli... read more

One example of an organism where cell division serves as a mode of reproduction is the bacteria species called Escherichia coli (E. coli). E. coli reproduces through a process called binary fission, where a single cell divides into two identical daughter cells. This form of reproduction allows E. coli populations to rapidly increase under favorable conditions.

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Answered on 07/04/2024 Learn Unit 1- Reproduction

Nazia Khanum

The alga that reproduces asexually through zoospores is known as Chlamydomonas. These reproductive units are called zoospores because they are motile, flagellated cells that can move through water using their whip-like flagella. "Zoo" means animal, and "spore" refers to a reproductive cell, so zoospores... read more

The alga that reproduces asexually through zoospores is known as Chlamydomonas. These reproductive units are called zoospores because they are motile, flagellated cells that can move through water using their whip-like flagella. "Zoo" means animal, and "spore" refers to a reproductive cell, so zoospores are essentially animal-like reproductive cells due to their ability to

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Answered on 07/04/2024 Learn Unit 1- Reproduction

Nazia Khanum

The correct statement is: (i) The cell divides by binary fission. One of them develops into a bud. Yeast typically reproduces asexually through a process called budding. In budding, a small projection (the bud) forms on the surface of the parent cell. The nucleus of the parent cell divides, and one... read more

The correct statement is:

(i) The cell divides by binary fission. One of them develops into a bud.

Yeast typically reproduces asexually through a process called budding. In budding, a small projection (the bud) forms on the surface of the parent cell. The nucleus of the parent cell divides, and one nucleus migrates into the bud. Eventually, the bud detaches from the parent cell, becoming a new individual. This process is a form of binary fission because the parent cell divides into two unequal parts, with one developing into a bud.

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Answered on 07/04/2024 Learn Unit 1- Reproduction

Nazia Khanum

A characteristic feature of zoospores in some algae is their flagella, which are whip-like appendages used for locomotion. These flagella enable zoospores to move through water efficiently. The function of zoospores in algae is reproduction. Zoospores are reproductive cells that are typically motile... read more

A characteristic feature of zoospores in some algae is their flagella, which are whip-like appendages used for locomotion. These flagella enable zoospores to move through water efficiently.

The function of zoospores in algae is reproduction. Zoospores are reproductive cells that are typically motile and released from specialized structures called sporangia or zoosporangia. They allow algae to disperse and colonize new habitats, contributing to the reproductive success and survival of the organism.

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Answered on 07/04/2024 Learn Sexual Reproduction in Flowering Plants

Nazia Khanum

The tassels of a corn cob represent the male reproductive structure of the corn plant, which is analogous to the stamen in a flower. Specifically, the tassel contains the pollen-producing organs called anthers, which release pollen grains. read more

The tassels of a corn cob represent the male reproductive structure of the corn plant, which is analogous to the stamen in a flower. Specifically, the tassel contains the pollen-producing organs called anthers, which release pollen grains.

 
 
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Answered on 07/04/2024 Learn Sexual Reproduction in Flowering Plants

Nazia Khanum

As an AI text-based model, I'm unable to directly draw diagrams. However, I can describe the cellular components of a mature microspore of an angiosperm for you: Cell Wall: The outermost layer providing structural support. Plasma Membrane: Surrounds the cytoplasm, controlling the movement of substances... read more

As an AI text-based model, I'm unable to directly draw diagrams. However, I can describe the cellular components of a mature microspore of an angiosperm for you:

  1. Cell Wall: The outermost layer providing structural support.
  2. Plasma Membrane: Surrounds the cytoplasm, controlling the movement of substances in and out of the cell.
  3. Cytoplasm: Gel-like substance where organelles are suspended.
  4. Nucleus: Contains genetic material (DNA) and controls cellular activities.
  5. Mitochondria: Organelles responsible for energy production through cellular respiration.
  6. Endoplasmic Reticulum (ER): Involved in protein synthesis and lipid metabolism.
  7. Ribosomes: Synthesize proteins.
  8. Golgi Apparatus: Modifies, sorts, and packages proteins and lipids for secretion or transport.
  9. Vacuole: Membrane-bound organelle responsible for storage of various substances.
  10. Microtubules and Microfilaments: Part of the cytoskeleton, providing structural support and facilitating cellular movements.
  11. Pollen Grain: The mature microspore itself, containing the male gametophyte of the plant.

This description provides an overview of the cellular components you would find in a mature microspore of an angiosperm.

 
 
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