What do photoautotrophs use to produce organic matter?
Light energy
From what do photoautotrophs produce organic matter by photosynthesis?
Mineral matter including carbon dioxide, water, and mineral salts
What is starch in relation to glucose?
A storage form of glucose
Is starch the initial product of photosynthesis?
No, it is not the initial product
How can the glucose-producing area in a leaf be identified?
It is the illuminated area where photosynthesis occurs.
In which tissues does photosynthesis occur?
In chlorophyllous parenchyma tissues and chlorophyllous cells with chloroplasts.
Where are starch grains seen after light exposure?
Inside chloroplasts.
What do starch grains inside chloroplasts indicate?
Chloroplasts produce plant organic matter.
What are chlorophyll pigments in plant cells?
Photosynthetic pigments located in chloroplasts that intercept light energy.
Which light colors do chlorophyll pigments absorb?
Red and blue light.
Why do plants appear green due to chlorophyll pigments?
Because they diffuse green light.
What happens to organic matter produced by photosynthesis when not immediately used?
It is stored as reserves.
What are rhizomes and their function?
Perennial underground stems with buds and reduced leaves storing reserves for survival and nutrition.
What are tubers and their types?
Annual organs filled with reserves, either roots like carrots or stems like potatoes.
What dual role do tuber stems have besides storing reserves?
They allow organism multiplication.
What do seeds protect and contain?
They protect the embryo and contain reserves for growth.
What do fleshy fruits contain besides protection?
Organic reserves.
What is the goal of the reserve-identification practical?
To identify forms of organic matter reserves in plant organs and seeds.
What color does Lugol solution turn in presence of starch?
Blue-black
What is the first step to observe starch in leaf epidermises?
Sampling epidermises from a non-coloured and a coloured leaf.
What is added to leaf epidermises to detect starch?
Iodine water is added to the samples.
What follows iodine treatment in the starch observation protocol?
Waiting 5 minutes, diluting with distilled water, mounting on a slide, and microscope observation.
What do photosynthetic pigments do with absorbed light energy?
They make it usable for photosynthesis.
What are bulbs in plants?
Underground reserve organs with a short stem, small roots, and thick leaves around an apical bud.
What are the main steps in the reserve-identification practical?
Propose strategy, apply protocol, present and interpret results, obtain resource, conclude.
Which samples and reagents are used in the reserve-identification practical?
Walnuts, beans, watch glasses, reagent solution, red S, iodine water, Fehling's solution, water bath.
How does the nature of reserves in seeds vary?
It differs according to the species.
Answer 13 questions on Plant Organic Matter Production.
1. How do photoautotrophs obtain the organic matter they need for growth?
2. Which statement correctly describes starch in relation to photosynthesis?
Go over the full study guide for Plant Organic Matter Production.
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