Tag: organisation of the organism

Questions Related to organisation of the organism

Stratum germinations is an example of which kind of
epithelium

biology cell structure plant and animal cell cell structure and micro-organisms organisation of the organism

  1. Cuboidal

  2. Ciliated

  3. Columnar

  4. Squamous

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Correct Option: C
Explanation:

Epidermis has several distinct layers of epithelial cells. The innermost layer called stratum germinations has columnar cells resting upon a common basement membrane.

The glyoxysomes in a plant cell ___________________.

biology cell structure plant and animal cell cell structure and micro-organisms organisation of the organism

  1. Detoxify the hydrogen peroxide produced in the cell

  2. Store the waste products released in the carbohydrate metabolism

  3. Break down the fatty acids during the respiration of lipid

  4. Convert glycol ate into glycine

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Correct Option: A

Chloroplast contains maximum quantity of _________________.

biology cell structure plant and animal cell cell structure and micro-organisms organisation of the organism

  1. Pyruvic carboxylase

  2. Hexokinase

  3. RUDP caboxylase

  4. None of the above

Show answer
Correct Option: C
Explanation:

Pyruvate carboxylase is a mitochodrial enzyme that catalyzes carboxylation of pyruvate into oxaloacetate. Hexokinase is an enzyme of glycolysis and is present in the cytoplasm. RUBP carboxylase catalyzes carboxylation of RuBP during photosynthetic carbon fixation. Chloroplasts is the site of photosynthesis and contain maximum quantity of RUBP carboxylase. The correct answer is C.

In a chloroplast, what is the ration of chl a : chl b and carotenes : xanthophylls respectively?

biology cell structure plant and animal cell cell structure and micro-organisms organisation of the organism

  1. 3 : 1 and 2 : 1

  2. 2 : 1 and 3 : 1

  3. 3 : 2 and 1 : 1

  4. 1 : 1 and 3 : 2

Show answer
Correct Option: A
Explanation:

  • A chloroplast is the site of photosynthesis, it contains all the pigments required for the process of photosynthesis. Pigments are of two types: Chlorophylls and Carotenoids.
  • Chlorophylls are the green photosynthetic pigments, they are of mainly five types - chlorophyll a, b, c, d, and e. The amount of chlorophyll b is one-fourth of the total chlorophyll content while chlorophyll a is the universal or primary photosynthetic pigment and present in abundance.
  • Carotenes are hydrocarbons, they may be yellow, brown or reddish pigments.
  • Xanthophylls are oxygen-containing carotenes, yellowish brown in color.
So, the correct option is '3: 1 and 2: 1'.

Dye injected into a plant cell might be able to enter an adjacent cell through _______.

biology cell structure plant and animal cell cell structure and micro-organisms organisation of the organism

  1. microtubule

  2. microfilament

  3. plasmodesmata

  4. tight junction

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Correct Option: C
Explanation:

Plasmodesmata are cytoplasmic bridges between adjacent plant cells which develop in minute pores of their walls. They form protoplasmic continuum called symplast. It provides channels for controlled passage of small sized particles between adjacent cells as well as transfer of some specific signals.

A cell that contains a cell wall, chloroplasts and a central vacuole is-

biology cell structure plant and animal cell cell structure and micro-organisms organisation of the organism

  1. Plant cell.

  2. Animal cell.

  3. Yeast cell.

  4. Bacterial cell.

Show answer
Correct Option: A
Explanation:

Plant cells have a large central vacuole, are surrounded by a cell wall, and have chloroplasts, which are the organelles of photosynthesis. Photosynthesis converts the sun's solar energy into chemical energy. This chemical energy, which is the carbohydrate glucose, serves as "food" for the plant.

Hence A is the correct option. 

Plant cell can do___________

biology cell structure and micro-organisms plant and animal cell cell structure organisation of the organism

  1. Breathing and respiration

  2. Respiration and photosynthesis

  3. Breathing and photosynthesis

  4. All of the above

Show answer
Correct Option: B
Explanation:
The plant cell can do respiration and photosynthesis. The plants get energy through the process of respiration in which glucose food breaks down in the presence of oxygen to form carbon dioxide and water with the release of energy. In plants, photosynthesis takes place in the cell organelle called chloroplast. A plant cell cannot breathe because in a plant body lungs are absent.
So the correct answer is 'Respiration and photosynthesis'.

Which of the following has a rigid cell wall that surrounds the cell membrane?

biology cell structure and micro-organisms plant and animal cell cell structure organisation of the organism

  1. Plant cell

  2. Animal cell

  3. Viruses

  4. None of the above

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Correct Option: A
Explanation:

Plant and animal cells have several differences and similarities. For example, animal cells do not have a cell wall or chloroplast but plant cells do. Animal cells are round and irregular in shape while plant cells have fixed, rectangular shapes.

Identification part on plants cell is

biology cell structure and micro-organisms plant and animal cell cell structure organisation of the organism

  1. Centrosome

  2. Mitochondria

  3. Protoplasmic membrane

  4. Cell wall

Show answer
Correct Option: D
Explanation:

Plant and animal cells have several differences and similarities. For example, animal cells do not have a cell wall or chloroplasts but plant cells do. Animal cells are round and irregular in shape while plant cells have fixed, rectangular shapes.

Which of the following cells tend to have one large central vacuole that can take up to 90% of cell volume?

biology cell structure and micro-organisms plant and animal cell cell structure organisation of the organism

  1. Bacterial

  2. Plant 

  3. Animal 

  4. None of the above

Show answer
Correct Option: B
Explanation:

The main structural differences between plant and animal cells are the additional structures found in plant cells. These structures include chloroplasts, the cell wall and vacuoles. Vacuoles are large, liquid-filled organelles found only in plant cells. Vacuoles can occupy up to 90% of a cell's volume and have a single membrane. Their main function is as a space-filler in the cell, but they can also fill digestive functions and their interiors can be used as storage for nutrients.