Explanation

Mangroves are salt-tolerant trees that grow in coastal areas, especially in muddy shores and river deltas.

Mangrove plant families first appeared during the Late Cretaceous 

Explanation

Photosynthesis

• Definition: Process by which plants synthesize food in the presence of sunlight
• Main Organ: Leaves (chlorophyll in chloroplasts)
• Inputs: Sunlight, CO₂ (carbon dioxide), H₂O (water)
• Outputs: Glucose (C₆H₁₂O₆) and O₂ (oxygen)
• Importance: Provides energy for plants and oxygen for other living organisms

Last verified on 05-02-2026

Explanation

Mature crop cutting refers to harvesting crops when they are fully grown and ripened to measure yield and plan storage.

Explanation

Cotton cultivation requires a significant number of frost-free days, typically around 210

It is the crop that requires high temperatures (21°C to 30°C)

It thrives in tropical and subtropical climates

It's grown in the Kharif season

Explanation

• Lichens are a combination of fungus and algae or cyanobacteria.
• Both organisms benefit from each other, forming a symbiotic relationship.
• Fungus provides structure and protection; algae/cyanobacteria perform photosynthesis.

Last verified on 04-02-2026

Explanation

• Water in soil exists in three forms: capillary, gravitational, hygroscopic.
• Capillary water is held in small soil pores and is available for plant roots.
• Capillary water is crucial for plant growth and nutrient transport.

Last verified on 04-02-2026

Explanation

Trees found at a height of 1000–4000 meters are primarily called coniferous trees or montane temperate forest trees,

Particularly in the Himalayan region, where they often form extensive forests. 

Explanation

Explanation

• Halophytes are plants that thrive in saline or salty soils.
• They have adaptations to survive high salt concentrations in soil or water.
• Common in coastal areas, salt marshes, and saline deserts.

Last verified on 03-02-2026

Explanation

• Ethylene is a gaseous plant hormone that stimulates fruit ripening.
• It can inhibit vegetative growth in some plants.
• It is naturally produced by fruits like apples and bananas during maturation.

Additional information:

• Abscisic acid helps in seed dormancy and stress response.
• Auxin mainly promotes cell elongation and growth.

Last verified on 30-01-2026