Plant Nutrition

Question 1

Photosynthesis: Definition

Answer 1

Photosynthesis is the process in green plants where carbohydrates (e.g., glucose) are produced from carbon dioxide and water, using light energy and chlorophyll.

Question 2

Photosynthesis Equation: word and chemical equation

Answer 2

Photosynthesis Equation**

Word Equation:
- Carbon dioxide + water → glucose + oxygen

Chemical equation:
-6CO2+6H2O→C6 H12 O6+6O2

Question 3

Energy Source in Photosynthesis

Answer 3

Energy Requirement:
- Photosynthesis needs energy, acquired by chlorophyll from sunlight.

Question 4

Role of Chlorophyll in Photosynthesis: Chlorophyll Function

Answer 4

Chlorophyll, a pigment, captures light during photosynthesis, playing a key role in the process.

Question 5

Oxygen Release in Photosynthesis

Answer 5

By-Product:
- Oxygen is produced as a by-product during photosynthesis and is released

Question 6

Mineral Uptake in Plants

Answer 6

Carbon Dioxide and Water Sources:
- Carbon dioxide enters leaves through stomata, while water is absorbed by roots and transported via the xylem to the leaves.

Question 7

Use of Glucose in Plants

Answer 7

Glucose Utilization:
- Plants employ glucose for various purposes, including synthesizing essential substances and as an energy source in respiration.

Question 8

Oxygen Role in Respiration

Answer 8

Oxygen Usage:
- Oxygen, released through stomata, is utilized in plant respiration, contributing to the energy release process.

Question 9

Chlorophyll definition

Answer 9

Chlorophyll is a green pigment residing in chloroplasts within plant cells, imparting the characteristic green color to plants.

Question 10

Role of Chlorophyll in Photosynthesis

Answer 10

Energy Transfer:

Chlorophyll facilitates the conversion of light energy into chemical energy crucial for carbohydrate synthesis during photosynthesis.

Question 11

Significance in Photosynthesis

Answer 11

Photosynthesis relies on chlorophyll, making it indispensable for the process to take place in plants.

Question 12

Usage of Photosynthesis Products: Carbohydrate Utilization

Answer 12

Carbohydrates from photosynthesis serve various purposes in plants.

Question 13

Storage of Carbohydrates

Answer 13

Starch Storage:Converted into starch molecules, serving as an effective energy store for plants.

Question 14

Structural Role: Cellulose Formation

Answer 14

Transformed into cellulose to contribute to the construction of plant cell walls.

Question 15

Energy Source: Glucose in Respiration

Answer 15

Glucose can be utilized in respiration, providing energy for plant metabolism

Question 16

Transportation: Sucrose for Phloem Transport

Answer 16

Converted to sucrose, which is essential for transport in the phloem of plants.

Question 17

Pollination Strategy: Nectar Production

Answer 17

Carbohydrates, like sucrose, can be used as nectar to attract insects for pollination.

Question 18

Conversion to Lipids and Amino Acids

Answer 18

Lipid and Amino Acid Formation:Conversion of carbohydrates into lipids for energy storage in seeds and amino acids for protein synthesis when combined with nitrogen and other mineral ions absorbed by roots.

Question 19

Plant Biological Molecules: Photosynthesis Output

Answer 19

Photosynthesis produces carbohydrates, proteins, lipids, and nucleic acids in plants.

Question 20

Self-Sufficiency of Plants: Independent Synthesis

Answer 20

As plants don’t consume food, they synthesize various biological molecules, including proteins, lipids, and nucleic acids.

Question 21

Elemental Composition: Carbohydrates vs. Proteins:

Answer 21

Carbohydrates contain carbon, hydrogen, and oxygen, while proteins contain nitrogen, and some amino acids include other elements.

Question 22

Chlorophyll Composition: Chlorophyll Elements

Answer 22

Chlorophyll, a crucial pigment in photosynthesis, contains magnesium and nitrogen.

Question 23

Elemental Requirement: Essential Elements for Growth

Answer 23

Plants need various elements for proper growth, and mineral ions are actively absorbed from the soil by root hair cells.

Question 24

Mineral Ions Overview: Definition of Mineral

Answer 24

Mineral’ describes naturally occurring inorganic substances.

Question 25

Magnesium in Plants

Answer 25

Mineral Ion: Magnesium (Mg)
Function: Necessary for chlorophyll production.
Deficiency: Causes yellowing between leaf veins (chlorosis).

Question 26

Nitrate in Plants

Answer 26

Mineral Ion: Nitrate (NO3-)
Function: A source of nitrogen for amino acids, essential in protein synthesis.
Deficiency: Results in stunted growth and yellowing of leaves.