PLA | MCQs

Explanation

• The coleoptile is a protective sheath that covers the emerging plumule (shoot) in grasses, including maize.
• It grows out of the soil, forming a straight stalk-like structure that eventually splits to reveal the first leaves.

Explanation

• Maize (Zea mays) is a monocotyledonous plant.
• It belonging to the family Poaceae (grass family).

Explanation

• The embryo is the miniature plant inside a seed, consisting of the radicle (root), hypocotyl (stem), and cotyledon (seed leaf).
• It contains the structures that develop into the root, stem, and leaves of the new plant.

Explanation

• French bean (Phaseolus vulgaris) is a dicotyledonous plant, belonging to the family Fabaceae (Leguminosae).
• Dicot plants have two cotyledons (seed leaves) in their seedlings, and their leaves typically have net-like veins.

Explanation

Dicot plants are characterized by:

• Leaves with netted venation
• Seeds with two cotyledons
• Flowers with four or a multiple of four floral leaves

Having leaves with parallel venation is actually a characteristic of monocot plants, not dicots.

Explanation

Monocot plants are characterized by:

• Leaves with parallel venation
• Seeds with one cotyledon
• Flowers with three or a multiple of three floral leaves

Having flowers with four or a multiple of four floral leaves is actually a characteristic of dicot plants, not monocots.

Explanation

Flowering plants are classified into two main groups:

1. Monocotyledons (Monocots) have one cotyledon. Examples: maize, rice, wheat, grasses.
2. Dicotyledons (Dicots) have two cotyledon. Examples: mango, lemon, gram, beans or pea, sunflowers.

Explanation

Plants are divided into two main groups:

1. Flowering Plants (Angiosperms): These plants produce flowers and fruits. Examples include: Roses, Sunflowers, Tomatoes, Wheat and Hibiscus etc.
2. Non-Flowering Plants (Gymnosperms): These plants do not produce flowers or fruits. Examples include: Ferns, Mosses, Pine trees and Cycads etc.

Explanation

• Fungi are multicellular organisms, consisting of many cells that work together to form complex structures like mushrooms and molds.
• They have modified cell wall and nucleus.
• They have not chlorophyll.
• Animals, including humans, are multicellular organisms made up of many cells that work together to form tissues, organs, and systems.
• They have modified nucleus but don't have cell wall.
• They have not chlorophyll.
• Bacteria are unicellular organisms.
• They have cell wall but don't have proper nucleus.
• It doesn't contain chlorophyll.
• It is used to make medicines, yogurt and cheese.

Explanation

• Plants are multicellular, composed of many cells that work together to form roots, stems, leaves, and other structures.
• They have modified cell wall and nucleus.
• They have chlorophyll.
• Algae are unicellular with proper cell wall and nucleus.
• It contain chlorophyll.
• It causes diseases: Cutleria, Ulva and Volvox.