Name the 3 tissue systems present in plants. Phototropism is controlled by light
ID: 81930 • Letter: N
Question
Name the 3 tissue systems present in plants. Phototropism is controlled by light. A) red B) blue C) far red D) yellow Fruit developed from many carpels many flowers are A) multiple B) aggregate C) simple dry D) simple fleshy Explain role of phytochrome in flowering. Explain cohesion-tension theory of ascent of sap. Why do some plants eat insects? In plants water is absorbed by A) diffusion B)osmosis c) active transport D) ionic exchange Explain bulk flow of sugars in phloem. Distinguish between apoplast and symplast routes for water/mineral absorption. How do stomata open or close? What is double fertilization?Explanation / Answer
ANSWER:
1) Epidermis - Cells forming the outer surface of the leaves and of the young plant body.
Vascular tissue - The primary components of vascular tissue are the xylem and phloem. These transport fluid and nutrients internally.
Ground tissue - Ground tissue is less differentiated than other tissues. Ground tissue manufactures nutrients by photosynthesis and stores reserve nutrients.
2) Red
3) Multiple
4) Phytochrome is a photoreceptor, a pigment, that plants, and some bacteria and fungi, use to detect light. ... Manyflowering plants use it to regulate the time of floweringbased on the length of day and night and to set circadian rhythms.
5) This forms a continuous water column throughout the xylem vessels of the plant, from the top to the root.As the water flows upward along the wall, strong cohesive forces between water molecules begin to function and pull the water upward.
6) Although most carnivorous plants eat small insects,To survive, these plants must find other sources for the nutrients they need. Trapping and digesting insects allows these unique plants to survive.
7) Osmosis
8) A high concentration of organic substances, particularly sugar, inside cells of thephloem at a source, such as a leaf, creates a diffusion gradient (osmotic gradient) that draws water into the cells from the adjacent xylem.Movement of phloem sap occurs by bulk flow from sugar sources to sugar sinks.
9) Difference Between Apoplast and Symplast Transport. The uptake of water by plants is called water absorption. Water is absorbed from the soil mainly through root hairs. The absorbed water crosses a variety cells such as cortical cells, passage cells, pericycle and xylem tubers to reach the leaves.
10) The opening and closing of the stomata is controlled by the guard cells.
11) Double fertilization is a complex fertilizationmechanism of flowering plants. This process involves the joining of a female gametophyte with two male gametes.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.