- What is the primary function of plant roots?
- A) Photosynthesis
- B) Anchorage and nutrient absorption
- C) Reproduction
- D) Respiration
- Which part of the root is responsible for water and nutrient absorption?
- A) Root cap
- B) Root hairs
- C) Cortex
- D) Endodermis
- What type of root system is characterized by a single main root with smaller lateral roots?
- A) Fibrous root system
- B) Taproot system
- C) Adventitious root system
- D) Cluster root system
- Which tissue in roots is responsible for the transport of water and minerals?
- A) Cortex
- B) Xylem
- C) Phloem
- D) Epidermis
- What is the role of the root cap?
- A) Photosynthesis
- B) Protection of the root tip during growth
- C) Nutrient storage
- D) Gas exchange
- Which structure allows roots to increase their surface area for absorption?
- A) Cortex
- B) Root hairs
- C) Meristem
- D) Endodermis
- What type of cells primarily make up the root cap?
- A) Parenchyma cells
- B) Columellar cells
- C) Sclerenchyma cells
- D) Phloem cells
- Which layer of cells regulates the flow of water and nutrients into the vascular system of the root?
- A) Cortex
- B) Endodermis
- C) Epidermis
- D) Pericycle
- What is the primary function of the phloem in roots?
- A) Water transport
- B) Transport of sugars and organic compounds
- C) Nutrient absorption
- D) Storage
- Which of the following is NOT a function of roots?
- A) Nutrient absorption
- B) Gas exchange
- C) Water absorption
- D) Anchorage
- What type of root modification is seen in plants like carrots and beets?
- A) Adventitious roots
- B) Storage roots
- C) Aerial roots
- D) Prop roots
- Which part of the root is responsible for growth in length?
- A) Maturation zone
- B) Apical meristem
- C) Lateral root zone
- D) Root cap
- What structure in roots allows for lateral root development?
- A) Endodermis
- B) Pericycle
- C) Xylem
- D) Cortex
- What is the primary role of the cortex in roots?
- A) Nutrient transport
- B) Storage and support
- C) Water absorption
- D) Gas exchange
- Which type of roots grow above the soil to provide additional support?
- A) Fibrous roots
- B) Aerial roots
- C) Taproots
- D) Storage roots
- What is the term for the protective sheath of cells covering the root tip?
- A) Epidermis
- B) Root cap
- C) Cortex
- D) Endodermis
- Which hormone is primarily involved in root growth and development?
- A) Cytokinins
- B) Auxins
- C) Gibberellins
- D) Ethylene
- What is the main difference between monocot and dicot root structures?
- A) Presence of root hairs
- B) Vascular arrangement
- C) Root cap size
- D) Root length
- What role does mycorrhizae play in root function?
- A) Increases root cap size
- B) Enhances nutrient uptake
- C) Provides structural support
- D) Increases photosynthesis
- Which layer in the root is responsible for the transport of nutrients and water to the stem?
- A) Vascular tissue
- B) Cortex
- C) Epidermis
- D) Pericycle
- In which type of environment do adventitious roots typically develop?
- A) Aquatic
- B) Flooded or unstable soils
- C) Rocky terrains
- D) Desert regions
- What is the main purpose of root nodules in legumes?
- A) Nitrogen fixation
- B) Nutrient storage
- C) Water absorption
- D) Photosynthesis
- What type of root structure is common in grasses?
- A) Fibrous root system
- B) Taproot system
- C) Adventitious root system
- D) Storage root system
- Which of the following helps roots anchor the plant securely in the soil?
- A) Photosynthesis
- B) Root structure and size
- C) Hormonal regulation
- D) Vascular arrangement
- What is the function of lenticels in root systems?
- A) Water storage
- B) Gas exchange
- C) Nutrient absorption
- D) Photosynthesis
- Which tissue in roots is primarily responsible for the formation of new cells?
- A) Xylem
- B) Phloem
- C) Meristematic tissue
- D) Parenchyma
- What adaptation do roots in dry environments typically have?
- A) Shallow growth
- B) Deep penetration
- C) Thick epidermis
- D) Large root hairs
- Which part of the root allows for the exchange of nutrients between the plant and the soil?
- A) Root hairs
- B) Xylem
- C) Phloem
- D) Root cap
- What type of roots emerge from the stem or leaves and grow into the soil?
- A) Fibrous roots
- B) Adventitious roots
- C) Taproots
- D) Storage roots
- What is the primary component of the root epidermis?
- A) Sclerenchyma
- B) Parenchyma cells
- C) Collenchyma
- D) Xylem
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