If a short-day plant has a critical night length of 15 hours, then which of the following will prevent flowering? Select one: O 8 hours light/8 hours dark/light flash/8 hours dark O 2 hours light/20 hours dark/2 hours light O 4 hours light/20 hours dark O 6 hours light/2 hours dark/light flash/16 hours dark O 8 hours light/16 hours dark

Q: A long-day plant will flower if Select one: O the duration of continuous light is less than a…

A: As recently discovered the amount of light which falls on plants also controls the flowering in…

Q: D. C.

A: The major parts of a flower are:- 1. Pistil which has subparts Stigma Style Ovary 2. Petal 3.…

Q: Which event would occur when guard cells are filled with water?     gases cannot diffuse into the…

A: Stomata are the tiny openings present on the epidermis of leaves, stems and other parts of the plant…

Q: what are evidences that indivate plants are measuring the length of the night?

A: Introduction  The physiological response of organisms to the length of night or a dark period is…

Q: Which of the following prevents germination of seeds: Select one: O gibberellins O ethylene O auxins…

A: Similar to animals, hormones play a vital role in plants too. The plant hormones are also called…

Q: Will a long-day plant (LDP) bear flowers after it was subjected to nights interrupted by flashing…

A: The flower is the important component of the plant. Because this helps to bear reproductive…

Q: Which of these is caused by the effects of auxin? (choose all that apply) 1.Maintaining apical…

A: Answer :- As we know that Auxins are powerfull development harmone created by plant normally. They…

Q: Persistent nucellus is called as _______ and is found in _______. (a) perisperm, black pepper (b)…

A: Answer is  a.) persiperm,black pepper.

Q: Write/discuss the major points of SHORT-DAY PLANTS in photoperiodism in a paragraph form and give…

A: Plants also respond to the surroundings and the climatic conditions.

Q: The example of the plant in which vegetative propagation is occured by leaves is called 1. Cannabis…

A: The organisms of the plant kingdom reproduce and propagate through the methods of sexual…

Q: Match the response with its main trigger. ___ phototropism                a. contact with an object…

A: phototropism - blue light gravitropism - gravity thigmotropism - contact with an object

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: Label the parts of the flower in the following illustration.

A: Plants are organisms with eukaryotic cells having cell walls and are capable of synthesizing their…

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: abscisic acid auxins ethylene gibberellins cytokinins found in developing leaves and seeds induces…

A: Introduction Hormones are chemical messengers that help the cell's many parts work together. These…

Q: What is the conclusion of the Experiment on Absoprtion of Water by Roots? A. Cup 1 - with half water…

A: Root of plant  The plant root it the under ground part of the plant which help in the absorption of…

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: Which of the given plant hormone will be more abundant in dormant buds and seeds? a.Gibberellin…

A: Plant hormones regulate nearly every aspect of plant growth and environmental reactions on the…

Q: Below is a Figure of a Shoot Tip, Is the encircled part a permanent tissue? True or False

A: Meristematic tissues in plants are made up of a swarm of undifferentiated cells whose sole purpose…

Q: Name TWO (2) characteristics of dark grown plant and provide specific term for dark grown plant. *

A: When plants are grown in the partial or complete absence of light, the process is termed Etiolation.…

Q: Identify the following structures of flowers:  Answer only numbers 12, 33, and 34.

A: The first image is that of a fruit and the second image is of a cross section of anther and ovary

Q: Owners and managers of plant nurseries have to plan lighting schedules for a long-day plant that…

A: Some plants require periodic light exposure to induce flowering. The plants depend on the exposure…

Q: The apical bud of a plant produces which inhibits lateral bud growth through the process known as…

A: Plant hormones are the molecules produced by the plants which help in the growth and development of…

Q: You prune 10 cm from a branch on the sunny side of a plant AND from one on the shady side. How will…

A: Pruning is a selective practice to remove the branch from a tree. The goal is to remove unwanted…

Q: Which term applies if peach trees growing in specific mild climates of the southern United States do…

A: Vernalization is the process of induction of flowering in a plant by exposing them to long duration…

Q: What is happening when plant stems grow upward, out of the ground? negative gravitropism positive…

A: The answer is Negative gravitropism. When the stem grows against the force of gravity(upwards), this…

Q: If the flowering is inhibited in a plant by exposure to bright light at night, it must be a- Select…

A: Step 1 Photoperiodism is the effect of photoperiods or relative lengths of day and night on the…

Q: The summer is not optimal for grape growing and you're searching in your memory for something…

A: Plant hormones are specific chemical molecules that plants make to regulate their growth and…

Q: Which plant structure contains the plant embryo, a food supply, and a protective covering? O ovary O…

A: Plants are the main Photosynthesizing organisms present on he planet. They are capable of producing…

Q: Identify the response of pollen tube movement towards ovule. A. autotropism B. phototropism C.…

A: As per our guidelines we are supposed to answer only ? One question ( if there are multiple…

Q: What is seed dormancy? Why is it good?

A: In terms of a species' survival, the seed is a crucial stage in the higher plant life cycle. It is…

Q: A high auxin to cytokinin ratio provide shoot formation while a high cytokinin to auxin ratio…

A: Auxin is a plant hormone produced in the stem tip that promotes cell elongation. Cytokinins are a…

Q: Kindly provide 2 examples plants having "adaptations for twining" including  (i) mechanical support…

A: Twiners: Plants that climb by winding around support are called twiners. Also called climbing…

Q: ‘Both a short day plant and a long day plant can produce flower simultaneously in a given place’.…

A: Long day plants are defined as the plants that require a long duration of light and short duration…

Q: A group of students have carried out an experiment to investigate the relationship between the…

A: Introduction :- Plant hormones plays important role in growth and differentiation of  cultured cells…

Q: Which plant hormone is known as germination inhibitor?     gibberellin   ethylene   abscisic acid…

A: Germination inhibitors referred to as the substances present in the plant which plays a key role in…

Q: You are trying to get some seeds started by soaking them in water. A few of the seeds are not taking…

A: Seed germination is defined as the progressive events that initiate with hydration of the seed and…

Q: What do you mean by wilting? State a condition for a plant to wilt.

A: Plants are multicellular organisms in the kingdom Plantae. The parts of plants are stems, flowers,…

Q: Name the seven parts that is responsible for the Breathing Process . Arrange them in order from…

A: Breathing It is defined as the process of facilitating gas exchange. It brings oxygen gas into the…

Q: clearly type the answers to all the parts to this question please  In shoot apical meristems, the…

A: Hi! Since you have posted more than one question, we will be answering the first part of it for you.…

Q: How will global climate change impacy plants that strictly respond to their environment through…

A: Global climate change impacts plants that respond to their environment through photoperiodism in the…

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…

Q: Short-day (long-night) plants

A: Some plants make use of the length of darkness and light that is day and night to detect the time of…

Q: Identify the wrong match a.Senescence —Both auxin and ABA promote it b.Apical dominance — Auxin…

A: a.Senescence —Both auxin and ABA promote it b.Apical dominance — Auxin induces and Cytokinin…

Q: Describe how photoperiod affects the flowering of the following group of plants : i) day-neutral

A: Photoperiodism is the process that plant measure its length of  photoperiod. In 1920 HA Allard first…

Q: What are the three phases of seed development? When does the peak of ABA concentration take place?…

A: Crop breeders place a high priority on seed development since it is linked to grain output. MiRNAs…

Q: Below is a Figure from a Shoot Tip, indicate which numbers islare meristematic cells? - 2 3

A:

Q: Predict whether flowering in a short day plant with a minimum critical length of 14 hours would be…

A: A short day plant is a plant that needs long duration of darkness. Short day plants are also known…

Environmental health and hazards

An organism's environment is the environment in which it lives and has an impact on its well-being. The World Health Organization (WHO) defines environmental health as "those aspects of public health, such as quality of life, that are influenced by physical, chemical, biological, social, and psychosocial components in the environment." Environmental health is concerned with both natural and man-made settings in order to enhance public health. Environmental science, occupational medicine, toxicology, and epidemiology are the key subdisciplines of environmental health.