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NEET • BIOLOGY • MORPHOLOGY OF FLOWERING PLANTS
Morphology of flowering plants practice · Hard
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91
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91 of 93Question permalink
Remembering
+4 | -1
Arrangements of veins and the veinlets in the lamina of leaf is termed as
View answer and explanation
Correct option: C
Venation
Option C (Venation) is correct because venation refers to the arrangement of veins and veinlets in the lamina of a leaf.
Solution approach
- Correct Answer + Core Reason: Venation. Venation is the arrangement of veins and veinlets in a leaf.
Step-by-Step Solution:
Step 1: Define the terms.
Step 2: Venation is the pattern of veins and veinlets in the lamina of a leaf. Phyllotaxy is the arrangement of leaves on a stem. Inflorescence is the arrangement of flowers on a stem. Petiole is the stalk of a leaf.
Step 3: Therefore, the arrangement of veins and veinlets is called venation.
Why other options are wrong:
- Option A: Phyllotaxy is the arrangement of leaves on a stem, not the arrangement of veins.
- Option B: Inflorescence is the arrangement of flowers, not the arrangement of veins.
- Option D: Petiole is the stalk of the leaf, not the arrangement of veins.
Key Concepts:
- Leaf venation
- Plant morphology
Memory Aids:
- Vein-ation = Arrangement of veins
Quick Tips:
- Focus on the specific definitions of botanical terms.
92
Hard
92 of 93Question permalink
Remembering
+4 | -1
Pericarp and placenta are edible part of simple fleshy berry fruit
View answer and explanation
Correct option: C
Tomato
Option C (Tomato) is correct because in a tomato, both the pericarp (fruit wall) and the placenta (tissue bearing the seeds) are fleshy and edible.
Solution approach
- Correct Answer + Core Reason: Tomato. Pericarp and placenta are edible parts of the tomato fruit.
Step-by-Step Solution:
Step 1: Define pericarp: The pericarp is the fruit wall, which develops from the ovary wall.
Step 2: Define placenta: The placenta is the tissue within the fruit that bears the seeds.
Step 3: Analyze the given options:
- Jack fruit: Only the fleshy bulbs around the seeds are eaten, not the entire pericarp and placenta.
- Banana: The fleshy part is primarily the inner layers of the pericarp.
- Tomato: Both the pericarp and the placenta are fleshy and edible.
- Date palm: The fleshy part is mainly the pericarp.
Why other options are wrong:
- Option A: Jack fruit - Only the bulbs around the seeds are eaten.
- Option B: Banana - The fleshy part is primarily the inner layers of the pericarp.
- Option D: Date palm - The fleshy part is mainly the pericarp.
Key Concepts:
- Fruit structure
- Pericarp
- Placenta
- Berry fruit
Memory Aids:
- Think of "Tomato" as "Total Edible Pericarp and Placenta".
Quick Tips:
- Consider which parts of the fruit are typically consumed when determining the edible parts.
93
Hard
93 of 93Question permalink
Remembering
+4 | -1
Pneumatophores are characteristics of farnily
View answer and explanation
Correct option: C
Rhizophoraceae
Option C (Rhizophoraceae) is correct because pneumatophores, specialized aerial roots, are a characteristic adaptation of plants in this mangrove family.
Solution approach
- Correct Answer + Core Reason: Rhizophoraceae. Pneumatophores are specialized roots found in mangrove plants like Rhizophora, belonging to the family Rhizophoraceae.
Step-by-Step Solution:
Step 1: Identify the key feature: Pneumatophores are aerial roots that help in respiration in waterlogged conditions.
Step 2: Recall plant families and their adaptations. Rhizophoraceae is known for mangrove plants.
Step 3: Relate pneumatophores to Rhizophoraceae.
Step 4: Conclude that pneumatophores are characteristic of Rhizophoraceae.
Why other options are wrong:
- Option A (Loranthaceae): Loranthaceae are parasitic plants, not known for pneumatophores.
- Option B (Hydrocharitaceae): Hydrocharitaceae are aquatic plants, but they don't typically have pneumatophores.
- Option D (Orchidaceae): Orchidaceae are epiphytic plants, and while some have aerial roots, they are not pneumatophores for respiration in waterlogged soils.
Key Concepts:
- Plant adaptations
- Root modifications
- Plant families
- Mangrove adaptations
Memory Aids:
- Rhizophora = Roots for respiration (pneumatophores)
Quick Tips:
- Remember that pneumatophores are specifically for respiration in waterlogged environments.
Revision notes and key takeaways
Review MORPHOLOGY OF FLOWERING PLANTS in your textbook or class notes, then use this set to check your understanding.
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