What are Phytochrome, photoreceptor, red and far-red light?

Q: How Long Can Seeds Remain Viable in Dormancy?

A: The phase of an organism's lifespan in which processes, such as physical activities, development,…

Q: Describe the internal structure of monocot root with the help of label diagram?

A: In the monocot root of Colocasia there is absence of Cuticle (Outer protecting covering of wax). The…

Q: Discuss the importance of the phytochrome system.

A: Phytochrome system helps the plants to sense and regulate their physiology according to the level,…

Q: A short-day plant flowers only when exposed to light for less than 12 hours long. Which of the…

A: CORVALLIS - it's discouraging when your lettuce bolts or you can't get your mum to bloom. there's…

Q: Difference between positive phototropism and negative prototropism?

A: Tropisms are either  positively or negatively  movements of the  organisms,parts of plants or organs…

Q: Which parts of the plant would you find the phytochromes highly concentrated? Why? *

A: Phytochromes  It is a photoreceptor, a pigment that plants and some algae and fungi use to detect…

Q: What are the two types of cells in the vascular cambium? Can either type be converted into the…

A: All plants come under the kingdom Plantae. They are eukaryotes, multicellular, and having cell…

Q: a. What are the two basic components of phytochrome?  b. Explain how phytochrome responds to…

A: Phytochrome is a photomorphogenetic pigment that absorbs red/far-red light and induces…

Q: What is a phytochrome? How do the two forms of phytochrome help control the plant life cycle?

A: Plants perform many activities with the help of light, other than photosynthesis. They can…

Q: What is phototropism?

A: Introduction  In this question we have to explain phtototropism.

Q: Describe how phytochrome allows a lowering plant to detect the photoperiod.

A: Phytochromes are defined as a class or group of photoreceptors present in plants, bacteria, and…

Q: why is the phytochrome receptor of plant cells blue in color?

A: Plants consist of unique protein based receptors which responsible for mediating the phototropic…

Q: how does phototropic response in plants in shaded and

A: Phototropism : It is growth in direction of of light . It is common in plants . Growth towards light…

Q: What are three plant defense mechanisms and what are the physiological costs and consequences of…

A: Different morphological, biochemical, and molecular processes are used by plants to react to…

Q: What are the plumule and the radicle? In dicots, why does the hypocotyl emerge from the ground…

A: Dicots are plants that have two embryonic leaves or the cotyledons whereas monocots have only single…

Q: Explain the conversion cycle of phytochrome.

A: Photopigment(commonly called chlorophyll) is a light absorbing molecule present in membrane bound…

Q: Why red cabbage can grow healthily under blue, green-blue or green light?

A: Photosynthesis is the process of formation of sugars in the presence of sunlight and chlorophyll by…

Q: Using the provided figure, describe the importance of the two phytochrome systems in controlling…

A: Phytochromes are light-sensing proteins found in plants and some bacteria. They are responsible for…

Q: In which type of germination do cotyledons remain below the soil and surfaces?

A: Hypogeal germination Hypogeal germination means the below-ground germination, where the cotyledons…

Q: Identify the potential role of phytochrome in plant flowering.

A: Phytochrome is a special type of photoreceptor found in plants, fungi as well as certain bacteria.

Q: Explain how phytochrome is afected by red wavelengths of light.

A: Plants are the primary producer of nature. They absorb the environmental light conditions by the…

Q: Explain what phytochrome is and how it functions

A: Photoperiodism is the effect or requirement of relative length of day and night on flowering.  The…

Q: What is photoperiod (photoperiodism) ? Explain the affects of photoperiod (photoperiodism) ?

A: Light, nutrients, minerals, water, and optimal temperatures are vital factors for plant growth. The…

Q: Which is an example of Phototropism?   A) roots of a plant following water B) plant bending toward…

A: Phototropism is the organism’s growth in response to a light stimulus. It is mostly observed in…

Q: Which phytochrome is sensing the shading and what are the TWO (2 rapid shade avoiding responses?*

A: Phytochromes are a class of the photoreceptor in plants, bacteria and fungi that are used to detect…

Q: What are day-neutral plant ?

A: A plant which flower regardless of the length of the period of light exposed to is called day…

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: What environmental stimuli trigger the various plant responses?

A: A stimulus is a detectable change in organism’s internal or external environment; this leads to…

Q: Which of the following type of inflorescence has an axis with limited growth? (a)    Drosera…

A: The inflorescence is the arrangement of flowers in the plants.

Q: In which specific area in the leaf does the dark reaction occur? In what area do the light reactions…

A: Sun is the source of all energy on earth. The energy of the Sun is used in all possible ways by  the…

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: How do statoliths and auxins participate in gravitropism?

A: Gravitropism is a term that define the the part of growth of the plants in some direction to…

Q: What is the adaptive significance of phototropism?

A: Phototropism refers to the phenomenon of movement (bending) of light towards or away from light. If…

Q: What would happen if you gave these plants a brief exposure to darkness in the middle of the…

A: Phytochrome is a receptor in a plant that accepts the red and far-red light coming from the sun. It…

Q: What term describes the waxy, waterproof coating produced by the epidermis of most plants? a) Hypha…

A: Plants are the multicelluler, photosynthetic organisms which mainly have producers of biosphere.…

Q: Phytohormones X and Y were added into a medium at a ratio of 1: 3. A stem explant cultured on this…

A: Phytohormones X and Y were added into a medium at a ratio of 1: 3. This means the quantity of Y was…

Cell Signaling

It allows cells to perform various cellular activities, coordinate, and interact with other cells. All cells of an organism receive signals from their environments and respond accordingly. Even the unicellular eukaryotes receive signals secreted by other cells and respond. In the case of yeast, mating takes place by signaling between the yeast cells. Communication by cell signaling in a multicellular organism has become a vast and important part of various fields of biology.