Is it true that in the gravitropic response of horizontal roots, high auxin concentration on the upper side impede growth while decreased auxin level on the lower side stimulates growth?

Q: A. Endodermal cells constitute the innermost layer of root cortex and surround the vascular cylinder…

A: Option A is correct because:- The innermost layer of cortex in the root is called Endodermis, the…

Q: If you removed a plant’s shoot apicalcmeristem and applied auxin to the cut surface, how would…

A: Auxins are a group of phytohormones that are produced in the tip of stem. It is responsible for…

Q: Contractile roots usually are combined with such shoot modification as A. Bulb B. Tuber C. Rhizome…

A: Plants contain different parts such as roots, stems, leaves, flowers, and fruits. Each of the parts…

Q: Newly-formed root cells begin to form different cell types in the ________. a. zone of elongation b.…

A: Cell, the fundamental and functional unit of life, is covered by a membrane called plasma membrane…

Q: The mature regions of roots are relatively impermeable to water. Why? Explain its importanc

A: The direct radicle elongation gives rise to the root. It is usually an underground plant part, meant…

Q: Which of the following is NOT an accurate statement about the acid growth hypothesis? Select one: O…

A: The Acid-Growth Hypothesis is a theory that explains how cells and organs expand in plants. It was…

Q: why is pressure higher in parts of the phloem Where sugar is being loaded than in parts were sugars…

A: Movement of water and minerals through the xylem is driven by negative pressure and movement through…

Q: Match A, B, C and D with: - Adventitious - Fibrous - Nodulated - Tap Root

A: Root  Root is the underground part of the plant with absorb water and nutrients from soil.

Q: Is there any other environmental signal that roots could use to achieve downward growth?

A: In vascular plants, the roots are the organs of the plant that are modified to provide the anchorage…

Q: When the roots of a corn (Zea mays) seedling grow downward, is this a negative response to light or…

A: Gravitropism is defined as the growth of plants in response to gravity.  The response is also seen…

Q: The annual rings are absent from the coconuts stem. What is the reason for that?

A: Annual rings is the annual deposition of wood which helps estimate the age of a plant.

Q: How can you tell primary and secondary roots and shoots apart

A:

Q: What is the tropic response called when a plant grows around an external object like a stake or…

A: We know that when a seed germinates in the soil its root and shoot keep growing if the developing…

Q: How is the plant able to detect which way is up and which way is down?

A: A taxis is a type of movement in which the organism moves towards the stimulus or source of the…

Q: From the viewpoint of the plant, can you suggest a practical reason for branch roots originating…

A: Roots are the organs of the plants that provide anchorage to the plant. The main function of the…

Q: How does the absence of a cap at a shoot apex differ from the apical meristem of a root?

A: The root apical meristem is covered as it passes through the soil by the root cap, which is made up…

Q: What would be the consequence of removing the Casparian strip? a. Water and mineral nutrients…

A: Casparian strip is a diffusion barrier which directs solutes and water from the soil to the…

Q: When a plant is transplanted or reported ,it will often show signs of water stress , such as wilting…

A: Answer of the question given below...

Q: . Charles and Francis Darwin discovered that(A) auxin is responsible for phototropic curvature.(B)…

A: Coleoptile refers to a leaf-shaped structure or a sheath that protects the tip of the young shoot.…

Q: Why is the secondary xylem and phloem always to either side of the vascular cambium

A: Meristem of the plants produces the new cells.

Q: What do you mean by “modification of roots"? Describe some of the modifications of tap roots giving…

A: The root of a plant is a portion of the plant that grows beneath the surface of the ground. It helps…

Q: Which of the following is considered essential for germination? Select one: a. Abscisin b.…

A: Germination is vital event in plants, in which plantlet are arise from seed on the onset of…

Q: What causes polar movement of auxinfrom shoot tip to base?

A: Auxins are known as master plant hormones as they influence the structure, development, and behavior…

Q: 1. Some plants grow mostly upward and no side branches. This condition is known as A. Apical…

A: Phytohormones or plant hormones are specific chemical molecules that are released from specific…

Q: What is an adventitious root? In a monocot rhizome such as that of irises and bamboo, are…

A: In-plant biology, the term adventitious roots can be defined as the roots originating from organs…

Q: Which of the following statements about gravity perception is FALSE? A. Statoliths are specialized…

A: Gravity perception is an important activity in plants as they need to send their roots downwards…

Q: To transport water from the root into the shoot does the water potential in the xylem need to become…

A: Water is the most crucial factor for a plant to perform its normal cellular functions. The movement…

Q: Most dicots have a |(transient, persistent) endosperm, while grasses have |(transient, persistent)…

A: The endosperm is a tissue produced inside the seeds. It  supports the  embryo by supplying…

Q: Explain why carrots, raddish and turnips are classified as roots. Why have they become fleshy?

A: Roots.  They are the part of plant that hold plant to the ground and absorb nutrients and water from…

Q: Why are some roots called Adventitious Roots?

A: Plants are living organisms belongs to kingdom Plantae . It consists of two types of system :-  A )…

Q: If the PIN2 gene is rendered non-functional by mutation it dramatically reduces the speed of the…

A: PIN1 is an 18kD protein that is responsible for the nucleocytoplasmic transport of mRNA and other…

Q: Do mature Zea mays (monocot) stem possess residual procambium? Why?

A: Residual Procambium is formed between primary phloem and primary xylem that remains mitotically…

Q: This model represents which stem: Monocot or Eudicot Label the following As A-E -Sclerenchyma fibers…

A: The tissues of monocot stems are not arranged in a concentric pattern. The vascular bundles are…

Q: from the viewpoint of the plant, can you suggest a practical reason for branch roots originate…

A: The root system is very important for a plant as it gives firm support/ anchorage and also helps in…

Q: What is the precursor of the intercalary meristem? How does the intercalary meristem contribute to…

A: Systematic tissue or meristem is defined as the tissue in which the cells continuously divide for…

Q: Both cohesion-tension and root pressure are mechanisms for moving water in the xylem.  What does it…

A: Xylem is defined as a plant vascular tissue that will convey or send water and dissolved minerals…

Q: As plants grow, they tend to align theirstems and roots along the direction of the gravitational…

A: Plants produce certain hormones which help them to respond to external stimuli. This phenomenon is…

Q: Why can a monocot like an iris branch and increase its number of leaves? Is the fact that the shoot…

A: Monocots are plants that produce seeds with a single cotyledon, which then develops into leaves. All…

Q: Why does a layer of periderm offer only temporary protection? When the plant makes a new layer of…

A: In plant cells, cell types known as meristems are capable of differentiating into all cell types.…

Q: Which of the following is not a typical plant response when exposed to drought conditions? * A.…

A: Biological functions such as photosynthesis are severely hampered by a lack of water.

Q: The vascular cambium of roots produces secondary xylem toward the and secondary phloem toward the ·…

A: The primary phloem is vascular tissue which requires energy for the transports of the materials and…

Q: In comparison with stems, roots secondary xylem exhibits..... 1. wider vessels 2. primary xylem…

A: Secondary xylem or wood is the secondary growth of a plant that develops from the cambium, a lateral…

Q: Which of the following plant hormones is produced in the root meristems, travel upward and in higher…

A: The plant hormones is produced in the root meristems, travel upward and in higher concentration…

Q: Which of the following is not a typical plant response to oxygen deficit due to flooding? * A.…

A: Introduction Plants Adapt To Their Ever-changing Environment In A Variety Of Ways, Resulting In A…

Q: Why is it that even if you put the newly germinated seed in an inverse position (roots above), the…

A: a. Plants have three basic organs which include roots, stems, and leaves. b. They are organized into…

Q: Which plant hormone mediates the seasonal abscission of fruits and leaves? gibberellin   ethylene…

A: Anatomy and physiology are the branches of biology, and anatomy deals with the study of the…

Plant sensory system

The plant sensory system is a sophisticated system that responds to environmental stimuli such as light,temperature, gravity, and touch. Research predicts that plant hormones and signaling mechanisms areresponsible for this regulation system in plants.