3
Question
How many statements are correct regarding plastids?
(A) Plastids are found in all plant cells and in euglenoids.
(B) Based on the type of pigments plastids can be classified into chloroplasts, chromoplast, and leucoplasts.
(C) In the chromoplasts fat-soluble carotenoid pigments like carotene, xanthophylls, and others are present.
(D) The ribosomes of the chloroplasts are larger than the cytoplasmic ribosomes.
(E) Leucoplasts are the colorless plastids which store nutrients.
How many statements are correct regarding plastids?
(A) Plastids are found in all plant cells and in euglenoids.
(B) Based on the type of pigments plastids can be classified into chloroplasts, chromoplast, and leucoplasts.
(C) In the chromoplasts fat-soluble carotenoid pigments like carotene, xanthophylls, and others are present.
(D) The ribosomes of the chloroplasts are larger than the cytoplasmic ribosomes.
(E) Leucoplasts are the colorless plastids which store nutrients.
(B) Based on the type of pigments plastids can be classified into chloroplasts, chromoplast, and leucoplasts.
(C) In the chromoplasts fat-soluble carotenoid pigments like carotene, xanthophylls, and others are present.
(D) The ribosomes of the chloroplasts are larger than the cytoplasmic ribosomes.
(E) Leucoplasts are the colorless plastids which store nutrients.
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Solution
The correct option is D Two
Plastids are the main sites of photosynthesis in eukaryotic cells. Primary plastids are found in most algae and plants, and secondary, more-complex plastids are typically found in plankton, such as diatoms and dinoflagellates. The ribosomes of mitochondria and chloroplasts are always smaller than 80S cytoplasmic ribosomes and are comparable to prokaryotic ribosomes in both size and sensitivity to antibiotics.Leucoplasts are colorless plastids (without pigments), that function as storage organelles. Leucoplasts comprise amyloplasts, elaioplasts (or leucoplasts), and proteinoplasts. They store starch, lipids, and proteins, respectively.So the correct option is 'Two'.
Plastids are the main sites of photosynthesis in eukaryotic cells. Primary plastids are found in most algae and plants, and secondary, more-complex plastids are typically found in plankton, such as diatoms and dinoflagellates.
The ribosomes of mitochondria and chloroplasts are always smaller than 80S cytoplasmic ribosomes and are comparable to prokaryotic ribosomes in both size and sensitivity to antibiotics.
Leucoplasts are colorless plastids (without pigments), that function as storage organelles. Leucoplasts comprise amyloplasts, elaioplasts (or leucoplasts), and proteinoplasts. They store starch, lipids, and proteins, respectively.
So the correct option is 'Two'.
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