What is a node in a plant stem? a) A point where leaves are attached b) The space between two leaves c) A type of root structure d) A point of nutrient storage Answer: a) A point where leaves are attached What is the primary function of an internode? a) Photosynthesis b) Water storage c) … Read more
What is the primary function of root hairs in plants? a) Nutrient storage b) Photosynthesis c) Water absorption d) Seed dispersal Answer: c) Water absorption Where are root hairs primarily located on a plant? a) Stem b) Leaves c) Root tips d) Flowers Answer: c) Root tips Which process primarily drives water absorption through root … Read more
What is the primary venation pattern characterized by a central midrib with smaller veins branching off? a) Parallel venation b) Reticulate venation c) Pinnate venation d) Palmate venation Answer: c) Pinnate venation Which type of leaf venation features veins that run parallel to each other along the length of the leaf? a) Reticulate venation b) … Read more
Which group of plants typically has seeds enclosed in fruits? a) Gymnosperms b) Angiosperms c) Both d) Neither Answer: b) Angiosperms What type of vascular tissue is primarily responsible for transporting water in both angiosperms and gymnosperms? a) Phloem b) Xylem c) Parenchyma d) Sclerenchyma Answer: b) Xylem Which type of plant has tracheids as … Read more
What adaptation do cacti have to reduce water loss? a) Thick cuticle b) Broad leaves c) Shallow roots d) Large flowers Answer: a) Thick cuticle Which structure in leaves helps minimize water loss through transpiration? a) Stomata b) Xylem c) Phloem d) Cortex Answer: a) Stomata How do the leaves of aquatic plants typically differ … Read more
Which hormone is primarily responsible for promoting cell elongation in plants? a) Gibberellins b) Auxins c) Cytokinins d) Ethylene Answer: b) Auxins What is the role of gibberellins in plant growth? a) Inhibit seed germination b) Promote fruit ripening c) Stimulate stem elongation d) Enhance leaf drop Answer: c) Stimulate stem elongation Which hormone is … Read more
What is the primary function of parenchyma cells? a) Support b) Photosynthesis and storage c) Transport of water d) Protection Answer: b) Photosynthesis and storage Which type of tissue provides flexible support to growing stems and leaves? a) Parenchyma b) Collenchyma c) Sclerenchyma d) Vascular tissue Answer: b) Collenchyma What type of cell wall do … Read more
What are meristems? a) Regions of differentiated cells b) Regions of undifferentiated cells that divide c) Structures that transport water d) Parts of the plant that store nutrients Answer: b) Regions of undifferentiated cells that divide Which type of meristem is responsible for primary growth? a) Lateral meristem b) Apical meristem c) Intercalary meristem d) … Read more
What are stomata? a) Structures for photosynthesis b) Small openings on leaf surfaces c) Roots of plants d) Water-absorbing cells Answer: b) Small openings on leaf surfaces Which gas primarily enters the leaf through the stomata? a) Oxygen b) Carbon dioxide c) Nitrogen d) Methane Answer: b) Carbon dioxide What is the primary function of … Read more
What is the primary function of the epidermis in plants? A) Protection against water loss and pathogens B) Photosynthesis C) Nutrient absorption D) Storage What is the cuticle primarily composed of? A) Cellulose B) Cutin C) Lignin D) Pectin Which type of cells primarily make up the epidermis? A) Parenchyma cells B) Squamous cells C) … Read more