1. Name one unicellular and one multicellular organism.
2. Why are animals called heterotrophs?
3. Mention two ways in which animals reproduce.
4. Name the waste products released during respiration.
5. Mention two ways in which plants respond to stimuli.
6. Why are cells called the structural and functional units of living
7. What is an organelle?
8. Why are mitochondria called the 'powerhouse of the cell’?
9. What does a nucleus contain?
10. What causes the colour of ripe fruits?
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Answers
Answer:
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Answer:
1. Difference Between Unicellular And Multicellular Organisms
Unicellular OrganismsMulticellular OrganismsUnicellular organismsare composed of a single cellMulticellular organisms are composed of more than one cellSimple body organizationComplex body organization
2. Animals depend on other organisms for getting their food. They cannot make their own food, so they areheterotrophs.
3. Asexual and sexual reproduction, two methods of reproduction amonganimals, produce offspring that are clones or genetically unique.
4. Cellular respiration, the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxideand water.
5. Plants responds to sunlight which is known as phototropism. For e.g. as you can see the sunflower turn itself always towards the light
Plantsalso responds to touch. For e.g. when we touch the 'touch me not plant it shows responses by closing its leaves.
6. The cell is called the structural and functional unit of life as all livingorganisms are made up of cells. ... Furthermore, cells provide form andstructure, process nutrients and convert it into useable energy. Multicellular organisms have specialized cells that perform specific functions.
7. An organelle is a subcellular structure that has one or more specific jobs to perform in the cell, much like an organ does in the body. Among the more important cell organelles are the nuclei, which store genetic information; mitochondria, which produce chemical energy; and ribosomes, which assemble proteins.
8. Mitochondria are often called the “powerhouses” or “energy factories” of a cell because they are responsible for making adenosine triphosphate (ATP), the cell's main energy-carrying molecule.
9. A nucleus is a membrane-bound organelle that contains the cell's chromosomes
10. The green colour of the unripe fruit is due largely to the presence of chlorophylls, and the development of different colours during ripening is due to the disappearance of these pigments and the synthesis of carotenoids. Anthocyanins also make a contribution to colours in some ripe fruits and vegetables.
Explanation:
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