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Vascular tissue allows for the movement of water and nutrients throughout the plant, and provides structural support for upright growth. Compare the water conducting cells of Bryophytes, tracheids in gymnosperms, and vessels in angiosperms.
• Transition from water-dependent reproduction to water-independent reproduction.
Early plants relied on swimming gametes and were thus
required wet conditions to complete the life cycle. The seed plants do not require water either for fertilization or for survival of the zygote (the zygote is protected
from desiccation in the seed coat, and may lie dormant until the conditions are favourable for germination.) This allowed plants to colonize dry environments.
Also acceptable is an explanation of how the coevolution of flowers and animal pollinators allowed for expansion of range in many plants.
• Evolution of stomata, cuticle and pores.
This allowed the plant to control the loss of water in arid environments.
• Evolution of lignin and woody skeletons.
This allowed the plant to grow upright and withstand damage from environmental conditions.
• Evolution and elaboration of roots and leaves.
Roots both anchored the
plant and absorbed water and nutrients from the soil. Elaboration of leaves increased rates of photosynthesis as a response to increased competition for
light.
What else can I help you with?
How does cellulose function in living things?
Cellulose is a structural polysaccharide found in the cell walls of plants. It provides rigidity and strength to plant cells, allowing them to maintain their shape and structure. Cellulose is vital for plant growth and provides support for upright growth.
How does a plant support itself in the upright position?
Plants have specialized tissues called xylem and phloem that provide structural support. Xylem transports water and minerals from the roots to the rest of the plant, while phloem transports sugars produced during photosynthesis. These tissues help maintain turgor pressure and provide rigidity to the plant structure, allowing it to stay upright. Additionally, some plants have evolved mechanisms such as lignin deposition and secondary growth to strengthen their stems and support their growth.
What do fibroblasts secrete?
Fibroblasts secrete proteins like collagen and elastin, which are key components of the extracellular matrix that provides structural support in tissues. They also release growth factors that help regulate cell growth and repair processes in the body.
What is Composed of hyaline cartilage until the end of adolescence?
The trachea and the larynx are composed of hyaline cartilage until the end of adolescence. This type of cartilage provides structural support and flexibility to these structures during growth and development.
How is support attained in herbaceous plants?
In herbaceous plants, support is attained through the presence of rigid cell walls in the stems and leaves. These cell walls provide structural support to the plant, helping it to stand upright. Additionally, some herbaceous plants may use mechanisms like thigmotropism (growth response to touch) to help them grow towards a support structure for additional stability.
How does cellulose function in living things?
Cellulose is a structural polysaccharide found in the cell walls of plants. It provides rigidity and strength to plant cells, allowing them to maintain their shape and structure. Cellulose is vital for plant growth and provides support for upright growth.
What work does hypocotyl do?
The hypocotyl is the embryonic stem of a seedling that connects the roots and the shoot. It helps in the emergence of the seedling from the soil and provides structural support during early growth stages. Additionally, the hypocotyl plays a role in nutrient and water uptake to support the growth of the young plant.
How does a plant support itself in the upright position?
Plants have specialized tissues called xylem and phloem that provide structural support. Xylem transports water and minerals from the roots to the rest of the plant, while phloem transports sugars produced during photosynthesis. These tissues help maintain turgor pressure and provide rigidity to the plant structure, allowing it to stay upright. Additionally, some plants have evolved mechanisms such as lignin deposition and secondary growth to strengthen their stems and support their growth.
Do blackberry bushes require a trellis for support and growth?
Blackberry bushes do not require a trellis for support and growth, but they can benefit from one to help keep the plant upright and make harvesting easier.
Does cellulose have anything to do with a stem?
Yes, cellulose is a structural carbohydrate found in plant cell walls, including those of stems. It provides strength and rigidity to the plant structure, contributing to the support and growth of the stem.
Do eggplants need a trellis for optimal growth and support?
Yes, eggplants benefit from a trellis for optimal growth and support as it helps keep the plant upright, promotes air circulation, and makes harvesting easier.
What do fibroblasts secrete?
Fibroblasts secrete proteins like collagen and elastin, which are key components of the extracellular matrix that provides structural support in tissues. They also release growth factors that help regulate cell growth and repair processes in the body.
Why is my Monstera growing sideways instead of upright?
Your Monstera plant may be growing sideways instead of upright due to insufficient light, improper watering, or lack of support for its growth. Adjusting these factors can help encourage your plant to grow upright.
What is Composed of hyaline cartilage until the end of adolescence?
The trachea and the larynx are composed of hyaline cartilage until the end of adolescence. This type of cartilage provides structural support and flexibility to these structures during growth and development.
Why are stems straight?
Stems grow straight towards the light in a process called phototropism. This allows plants to maximize their exposure to sunlight for photosynthesis, which is crucial for their growth and survival. Straight stems also provide structural support for the plant, helping it stand upright and withstand environmental forces.
How is support attained in herbaceous plants?
In herbaceous plants, support is attained through the presence of rigid cell walls in the stems and leaves. These cell walls provide structural support to the plant, helping it to stand upright. Additionally, some herbaceous plants may use mechanisms like thigmotropism (growth response to touch) to help them grow towards a support structure for additional stability.
Does cartilage synthesize red blood cells?
No, cartilage does not synthesize red blood cells. Red blood cells are produced in the bone marrow. Cartilage is a type of connective tissue that provides structural support and cushioning in the body.
