Anatomy of Flowering Plants - Online Test
Q1. Which among the following are elongated or tube like cells with thick and lignified walls and tapering ends?
Answer : Option D
Explaination / Solution:
Tracheids are elongated cells in the xylem of vascular plants that serve in the transport of water and mineral salts. Tracheids are one of two types of tracheary elements, vessel elements being the other.
Q2. The characteristic feature of which cells have lignified thickening at the corner?
Answer : Option C
Explaination / Solution:
Sclerenchyma consists of long, narrow cells with thick and lignified cell walls having a few or numerous pits.
Q3. In monocotyledons, guard cell of stomata areThe figure given below is the apical meristem in root. Identify ‘A’ in the diagram.
Answer : Option D
Explaination / Solution:
The part ‘A’ is protoderm in apical meristem of root.
Q4. Which is the function of companion cells?
Answer : Option A
Explaination / Solution:
companion cell: any of a number of specialized parenchymal cells adjacent to a sieve tube in the phloem of flowering plants, believed to regulate the flow of nutrients through the tube.
Q5. Tracheids differ from vessels in having
Answer : Option D
Explaination / Solution:
Tracheids and vessels are main water and mineral conducting tissues of xylem. Tracheid have pointed tips but vessels have blunt ends.
Q6. Epidermal appendages, unicellular or multicellular outgrowth strictly epidermal in origin is
Answer : Option C
Explaination / Solution:
Trichomes are epidermal appendages, unicellular or multicellular outgrowth strictly epidermal in origin present on the stem of plants.
Q7. In angiosperms vascular tissue develop from
Answer : Option D
Explaination / Solution:
In angiosperms vascular tissue develop from plerome. Plerome form the central core of the primary meristem of a plant or plant part.
Q8. Which epidermis of leaf contains more stomata?
Answer : Option A
Explaination / Solution:
Stomata is present more on the lower surface of leaf. The lower surface of leaf is called abaxial part of leaf that is away from direct sunlight to prevent excess of water loss.
Q9. Jute fibers deteriorate because they have
Answer : Option A
Explaination / Solution:
Jute fibers are made of high amount of lignin that deteriorate in presence of high moisture and water,
Q10. In monocotyledons, guard cell of stomata are
Answer : Option C
Explaination / Solution:
In monocotyledons, the guard cell of stomata are dumb-bell shaped, thicker on top and bottom and thinner in the middle.
