A seedling germinating under a stone grows at an angle away from the stone and upward. This response to touch is called ________. a. gravitropism b. thigmonasty c. thigmotropism d. skototropism

Q: long day plant is given a long night, and is interrupted by a light pulse in the middle of the…

A: Plants respond to specific light signals, including the duration and quality of light, a process…

Q: If you exposed seeds to a series of red light versus far-red light treatments, which of the…

A: Introduction: To absorb light, plants have specific pigments called phototropin and phytochrome.…

Q: Seed germination is stimulated by _____; stem elongation is stimulated by ____________ Select one:…

A: Seed germination is the process of events that begin the germination of seed that grows into new…

Q: which statement about stems is true? a. Gymnosperms have herbaceous stems. b. Woody stems…

A: Plants are divided into roots and shoots. Shoot is the upper part of the plant and root is the lower…

Q: 1.    Cell turgor allows the movement of nutrients to the different parts of the plant. a.    true…

A: Turgor pressure is the hydrostatic pressure exerted by the plant cell that pushes the cell membrane…

Q: Stem regions at which leaves are attached are called ________. a. trichomes b. lenticels c. nodes d.…

A: Plant body consists of various vegetative parts like leaf, stem and root. The reproductive parts of…

Q: Vernalization induces flowering following exposure to a. water. b. drought. c. cold. d. heat

A: The process that includes enhancement of seed production or stimulation of flowering by exposing a…

Q: In a flower after fertilization, the following tissues are diploid: a. carpel, integuments, and…

A: Fertilization can be defined as the process in which a fusion of the male gamete with the female…

Q: Which of the following are found in gymnosperms, as well as in angiosperms?   a. Fruits   b.…

A: Gymnosperms are the seed-producing plants which include conifers, cycads etc.  Angiosperms are the…

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: Gaseous hormones are able to enter cells without requiring specialmembrane transporter. Which of the…

A: Plant hormones are some chemical compounds that are present in very low amount in plant body.  They…

Q: Most gymnosperm seeds _______________. Select one: a. have attached wings to aid in dispersal b.…

A: Gymnosperms are considered as terrestrial vascular plants possessing proper xylem and phloem for the…

Q: Secondary growth in stems is usually seen in ________. a. monocots b. dicots c. both monocots and…

A: The stem bears branches, flowers, and leaves. The plumule gives rise to the stem. The part where a…

Q: Choose the best answer for following question It causes leaf abscission. a. auxin…

A: The abscission process takes place as three events- resorption, protective layer formation and…

Q: Which plant organ exhibits only determinate growth?     a. root   b. stem   c. leaf   d. all…

A: Growth is the basic feature of a living organism. The growth can be of two types namely, determinant…

Q: 16. Which of the following is correct in the angiosperm? A. A female gametophyte develops from the…

A: Which of the following is correct in the angiosperm? Female gametophyte are egg producing structures…

Q: A stamen contains aa. style.b. stigma.c. filament.d. carpel.

A: Plants are fundamentally multicellular living beings, transcendently photosynthetic eukaryotes of…

Q: New plants grow from pieces or cuttings of parent plants   Choose the right answer: a. Regeneration…

A: Reproduction  The process by which new organisms are produced from existing ones.

Q: Which combination of hormones is best for promotingthe formation of lateral roots from pericycle?a.…

A: In root and shoot formation of plant, auxin play a very important role. Internal and external…

Q: The habit of a perennial plant's dropping its leaves, which have all died, at the end of the growing…

A: The answer is d. Deciduous

Q: Choose the best answer for following question It inhibits plant senescence. a. auxin…

A: Cytokinin is a category of plant growth substances which stimulate cell division, or cytokinesis, in…

Q: Compare what happens to a spore mother cell as it gives rise to a spore with what happens to a spore…

A: Sexual reproduction in blossoming plants includes a significant marvel called pollination. The dust…

Q: 17. what vegetative organ of the plants contains lamina and stipules a. leaves b. roots c.…

A: Leaf structure consists of lamina and stipule. Hence, the answer to question 1 is (A) Leaves

Q: Choose the best answer for following question The seed leaves of a plant are called thea. meristem.…

A: Seeds are the result of the ripened ovule, after fertilization by pollen and some development inside…

Q: Fruits do not form in gymnosperms becausea. in gymnosperms, the seed is surrounded by the ovule.b.…

A: Answer is a.) in gymnosperms ,the seed is surrounded by the ovule.

Q: This plant hormone is a hydrocarbon gaseous hormone, which is best known for its role in fruit…

A: Plant hormone: Plant hormones or phytohormones are organic substances, present within plants in a…

Q: Give five plant examples each: A. Auxiliary or lateral buds

A: There are several types of buds observed in plants that are classified based on their location,…

Q: ______is the hormone in most rooting compounds. a. Gibberellin c. Cytokinin b. Auxin d. ABA

A: Introduction  Plant Hormones are also known as Phytohormones. Phytohormones are the signalling…

Q: How would a loss-of-function mutation in the α-amylase gene affect seed germination? a. The seed…

A: α-amylase: It is an enzyme that hydrolyses alpha bonds of alpha linked polysaccharides, such as…

Q: How are compound leaves distinguished from simple leaves?a. Compound leaves do not have axillary…

A: In a simple leaf, the lamina is entire or incised, the incision does not touch the midrib. in…

Q: with spines b. with thorns c. with stinging trichomes d. with cutin or waxy leaves  Plants to…

A: Physical defense are a first line of protection for some plants. These defense make it challenging…

Q: The flower part that contains ovules is thea. carpel. b. stamen. c. sepal. d. petal.

A: Answer is a.) Carpel.

Q: It is the hormone which is responsible for stem elongation. *         a. Gibberellins       b.…

A: Plant hormones: a. It is an endogenous organic compound that is produced at very low concentrations…

Q: Which of the following is a simple, dry, and dehiscent fruit?a. apple d. pineappleb. tomato e.…

A: Simple fruit:               A type of fruit which originates from a single or compound ovary with…

Q: The stalk of a leaf is known as the ________. a. petiole b. lamina c. stipule d. rachis

A: Plants are multicellular, eukaryotic organisms which have a well-defined nucleus, membrane bound…

Q: What are the medicinal uses of  A. Kapa-Kapa plant b. Tayabak plant c. Waling Waling plant d.…

A: INTRODUCTION The medicinal uses of Kapa kapa plant, Tayabak plant, Waling waling plant and Katmon…

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: If the VIN3 gene had a loss-of-function mutation, how do youthink that would affect the phenotypes…

A: Gene is a functional unit of heredity. A gene is a sequence of nucleotides in genome that codes for…

Q: In the mistletoe/cactus/bird paper, which of these was a response of the cactus to mistletoe seed…

A: Bees, which consume the berries and defecate on tree roots, disperse the majority of mistletoe…

Q: Pruning plants can promote lateral stems and increased plant biomass by _____________. Select one:…

A: The organic substances that regulate growth and development of the plant tissues/body are known as…

Q: The ________ are collectively called the calyx. a. sepals b. petals c. tepals d. stamens

A: The ‘angiosperms’ constitute highly advanced plants, which dominate the present vegetation. In…

Q: What mineral deficiency could cause an abnormal development of vascular system, especially xylem?…

A: Introduction  One of the two different kinds of transport tissue found in vascular plants—the other…

Q: Elevated levels of this hormone promote seed dormancy? Select one: a. gibberellin b. abscisic acid…

A: Plant hormones These organic molecules also called phytohormones are responsible for regulating 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.