Plant Physiology and Stress Responses

Plant Physiology and Stress Responses

Assessment

Interactive Video

Biology, Science, Chemistry

9th - 10th Grade

Hard

Created by

Patricia Brown

FREE Resource

The video discusses how plants face biotic and abiotic stresses, which can significantly reduce yield. Abiotic stresses are the main cause of these losses. Under optimal conditions, plants perform photosynthesis, using nutrients and water transported by raw sap. In adverse conditions, plants close stomata to conserve water, affecting photosynthesis. Plasmolysis and hyperturgescence occur under dry and wet conditions, respectively. Lalstim Osmo, a foliar spray, helps regulate osmotic balance, enhancing plant resistance to stress.

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8 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What percentage of yield potential can be affected by plant stresses?

Up to 100%

Up to 70%

Up to 50%

Up to 90%

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of stress accounts for most of the yield losses in plants?

Abiotic stress

Mechanical stress

Nutritional stress

Biotic stress

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary site of photosynthesis in plants?

Stems

Roots

Flowers

Leaves

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of 'raw sap' in plants?

Transporting oxygen

Transporting water and nutrients

Transporting carbon dioxide

Transporting sugars

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to plant cells during plasmolysis?

Cells become turgid

Vacuole fills with water

Vacuole empties water

Cells undergo mitosis

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do plants respond to excess water conditions?

Photosynthesis increases

Vacuole empties

Stomata close

Vacuole fills up

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the active ingredient in Lalstim Osmo?

Potassium

Phosphorus

Nitrogen

Glycine betaine

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How long does the effect of Lalstim Osmo last?

3 to 4 weeks

1 to 2 weeks

5 to 6 weeks

7 to 8 weeks