Biology
Abhay, a 9th grade student, is conducting a project for his school science fair. His task is to explore the structure of an animal cell. Abhay is particularly interested in learning about the different organelles that make up an animal cell. He starts by looking at animal cells under a microscope and comparing various organelles, inclusions and fluid material.
(a) Identify the organelle which is located near the nucleus and contains two short bundles of microfilaments arranged at right angles to each other.
(b) Which organelle is considered as the 'delivery system of the cell'?
(c) Cell membrane is composed of what material ?
(d) Give two examples of cell inclusions.
(e) Name the organelle which was seen by Abhay earlier in plant cells but lacking here in animal cells.
Related Questions
Assertion (A): Leukoplasts are colourless plastids as they have no pigments.
Reason (R): Leukoplasts are normally found in the non-photosynthetic parts of a plant.
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Assertion (A): Cristae are the finger-like projections arising from the inner walls of mitochondria.
Reason (R): These projections increase the surface area of the inner membrane and help in the production of ATP.
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Assertion (A): Euglena is an example of a unicellular, eukaryotic organism.
Reason (R): This organism is microscopic and has a well-defined nucleus.
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Assertion (A): Chromosomes carry hereditary information from parents to offspring.
Reason (R): Chromosomes are suspended in the cytoplasm of each cell whether its a plant cell or an animal cell. Chromosomes are composed of RNA threads.
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