Collenchyma occurs in the stem and petioles ofa)Xerophytesb)Monocotsc)Dicot herbsd)HydrophytesCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

Collenchyma  is found in epidermis of dicot stem and petioles and abundant in climbing stems. Collenchyma occurs as hypodermis (below the epidermis) and also above the petiole in dicots providing tensile strength. So, the correct answer is ' Dicot herbs'.

Answer

Collenchyma provide mechanical support to young
dicot stems and petioles. NCERT page no.86

Answer

Collenchyma tissue is a type of simple permanent tissue that provides mechanical support to the plant. It is found in the stem and petioles of dicot herbs.

Collenchyma in Dicot Herbs:
- Dicot herbs are a type of flowering plants that have two cotyledons (seed leaves). Examples of dicot herbs include tomato, sunflower, and bean plants.
- In these plants, collenchyma tissue is present in the stem and petioles.
- The stem is the main axis of the plant that supports leaves, flowers, and fruits. The petioles are the stalks that connect the leaves to the stem.
- Collenchyma cells are elongated and have thickened cell walls, especially at the corners. These thickened cell walls provide strength and support to the plant.
- The presence of collenchyma tissue in the stem and petioles of dicot herbs allows them to withstand mechanical stress and maintain their upright position.

Collenchyma in Xerophytes, Monocots, and Hydrophytes:
- Xerophytes are plants that are adapted to grow in dry environments. They have various adaptations to conserve water, such as thick cuticles and reduced stomata. Collenchyma tissue is not specifically associated with xerophytes.
- Monocots are a type of flowering plants that have a single cotyledon. Examples of monocots include grasses, lilies, and orchids. Collenchyma tissue is not typically found in monocots.
- Hydrophytes are plants that grow in water or in very wet conditions. They have adaptations to facilitate water absorption and gas exchange, such as large air spaces and reduced or absent collenchyma tissue.

In summary, collenchyma tissue is primarily found in the stem and petioles of dicot herbs. It provides mechanical support and allows these plants to maintain their upright position. It is not specifically associated with xerophytes, monocots, or hydrophytes.

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