Tropism 10 Across Down 1. growth towards sun or source of light 2. growth against gravity 3. growth in response to light 6. a response to a stimulus 7. growth away from sun or source of 4. turning in a particular direction light 8. tendency of roots to grow downward 5. relating to light 10. growth in response to gravity 11. thing or event that causes a response to an outside stimulus 9. relating to earth or gravity reaction

Tropism 10 Across Down 1. growth towards sun or source of light 2. growth against gravity 3. growth in response to light 6. a response to a stimulus 7. growth away from sun or source of 4. turning in a particular direction light 8. tendency of roots to grow downward 5. relating to light 10. growth in response to gravity 11. thing or event that causes a response to an outside stimulus 9. relating to earth or gravity reaction

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter25: Plant Tissues

Section: Chapter Questions

Problem 11SA

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Which of the following is an example of secondary growth?______ increase in length increase in thickness or girth increase in root hairs increase in leaf number
With stomata closed, a waterproof cuticle ______. a. minimizes water loss through plant surfaces b. permits gas exchange between the plant and the air c. both a and b
1. Complete the following statement: The response of plant roots to grow in the direction of a water source is known as –a. phototropism c. gravitropismb. hydrotropism d. thigmotropism2. Complete the following statement: The response of a plant to growtoward a light source is known as –a. gravitropism c. phototropismb. hydrotropism d. thigmotropism3. Complete the following statement: The response of a plant to grow in the direction of gravity is known as –a. phototropism c. thigmotropismb. hydrotropism d. gravitropism
17. the tip of root is protected by a root capa. trueb. false18. the elongation and maturation of cells add to the volumea. Trueb. False19. The enlargement of the plant cells is due to the absorption of watera. Trueb. False
In roots, growth of lateral branches beginsa. on the root epidermis.b. on the root hairs.c. at the ground meristem.d. at the pericycle.
1. Complete the following statement: The response of plant roots to grow in the direction of a water source is known as – a. phototropism c. gravitropism b. hydrotropism d. thigmotropism 2. Complete the following statement: The response of a plant to grow toward a light source is known as – a. gravitropism c. phototropism b. hydrotropism d. thigmotropism 3. Complete the following statement: The response of a plant to grow in the direction of gravity is known as – a. phototropism c. thigmotropism b. hydrotropism d. gravitropism 4. Plant roots are positively gravitropic; what does this mean? a. They are positively attracted to soil. b. They grow toward the direction of gravity. c. They grow away from other plant roots. d. They grow in the opposite direction to sunlight. 5. Plant shoots are positively phototropic; what does this mean? a. They grow toward a light stimulus. b. They grow toward other brightly colored plants. c. They grow away from bright sunlight. d. They reflect the…
Need help 1. Which among the statements is true about the epidermis of the roots? a.The roots have lenticels to allow the exchange of gases. b.The roots have no cuticles to allow the water to enter the system c.The epidermis of the roots have an extend different tissue known as roots hairs d.The roots have cuticle to prevent water loss
Differentiate taproot system from fibrous root system.
1. This type of specialized roots is characterized by contorted xylary elements and collapsed cortex. 2. The region of the root that is highly specialized for storage of substance.
1. Complete the following statement: The response of plant roots to grow in the direction of a water source is known as – a. phototropism c. gravitropismb. hydrotropismd. thigmotropism 2. Complete the following statement: The response of a plant to grow toward a light source is known as – a. gravitropismc. phototropismb. hydrotropismd. thigmotropism 3. Complete the following statement: The response of a plant to grow in the direction of gravity is known as – a. phototropismc. thigmotropismb. hydrotropismd. gravitropism 4. Plant roots are positively gravitropic; what does this mean? a. They are positively attracted to soil.b. They grow toward the direction of gravity.c. They grow away from other plant roots.d. They grow in the opposite direction to sunlight. 5. Plant shoots are positively phototropic; what does this mean? a. They grow toward a light stimulus.b. They grow toward other brightly colored plants.c. They grow away from bright sunlight.d. They reflect the majority of the…
33. the cells in the region of the cell division divide at the base of thea. meristemb. pericyclec. epidermisd. pith34. which shows that the root cap also functions in the perception of gravity ? it shows ___a. upwardb. all of the abovec. randomlyd. downward
Root hairs greatly increase the root’s surface area. In rye, a single plant has been found to have __________________ lateral roots with ________________ km of root length and a surface area of _________________ m2. Convert the length to miles (1 mile = 1.6 km) and the area to square feet (1 foot = 0.3 m).