Plant Nutrients: Spines and Secondary Metabolites

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Questions and Answers

What is the main stimulus for phototropism?

  • Gravity
  • Light (correct)
  • Touch
  • Chemicals

Which type of tropism involves the plant's response to gravity?

  • Chemotropism
  • Phototropism
  • Thigmotropism
  • Gravitropism (correct)

What is the role of chlorophyll in plants?

  • Metabolism based on chemistry principles
  • Production of sugars from sunlight (correct)
  • Absorption of water
  • Generation of touch responses

Which plant group is known for seed-bearing vascular plants?

<p>Gymnosperms (B)</p> Signup and view all the answers

What is the average lifespan of a columbine plant?

<p>3-4 years (D)</p> Signup and view all the answers

What makes plants unique among eukaryotic organisms?

<p>Ability to manufacture their own food (C)</p> Signup and view all the answers

What is the role of chlorophyll synthesis?

<p>Magnesium (C)</p> Signup and view all the answers

Which plant hormone promotes leaf detachment and seed dormancy?

<p>Abscisic Acid (B)</p> Signup and view all the answers

What is the function of SPINES in plants?

<p>Structural defense (A)</p> Signup and view all the answers

Which element is responsible for cell wall synthesis and root development?

<p>Calcium (C)</p> Signup and view all the answers

Which hormone is known for promoting stem elongation and inhibiting lateral bud growth?

<p>Auxin (B)</p> Signup and view all the answers

What is the role of plant hormones in response to stress conditions?

<p>Increasing tolerance to stress (B)</p> Signup and view all the answers

Where do the light reactions of photosynthesis take place?

<p>Photosynthetic membranes (thylakoids) (C)</p> Signup and view all the answers

What is the primary function of the dark reactions in photosynthesis?

<p>Incorporate CO2 into organic molecules (D)</p> Signup and view all the answers

Which molecule is NOT involved in the production of oxygen during photosynthesis?

<p>O2 (D)</p> Signup and view all the answers

What is the main purpose of light absorption in photosynthesis?

<p>Create ATP and NADPH (A)</p> Signup and view all the answers

What are the two main end products of the light reactions of photosynthesis?

<p>ATP and NADPH (D)</p> Signup and view all the answers

In which organelle do the dark reactions (Calvin Cycle) of photosynthesis occur?

<p>Chloroplast stroma (C)</p> Signup and view all the answers

Which plant movement is known as phototropism?

<p>Curving of the stem tip towards the light (B)</p> Signup and view all the answers

Which plant hormone promotes cell division or cytokinesis?

<p>Cytokinin (C)</p> Signup and view all the answers

What biological process does gibberellins promote in plants?

<p>Seed germination (B)</p> Signup and view all the answers

What is the word 'Parthenocarpy' derived from and what does it mean?

<p>Greek, means 'virgin fruit' (D)</p> Signup and view all the answers

How are bananas commonly propagated due to their sterile nature?

<p>By grafting (C)</p> Signup and view all the answers

What is the process that involves joining the shoot system of one plant to the root system of another plant?

<p>Grafting (C)</p> Signup and view all the answers

What is the main function of the seed coat?

<p>To protect the embryo (C)</p> Signup and view all the answers

Which part of the seed is responsible for developing into the plant's stem?

<p>Epicotyl (B)</p> Signup and view all the answers

What is the function of a radicle in a seed?

<p>To develop into the root of the plant (A)</p> Signup and view all the answers

Which type of pollination involves the transfer of pollen within the same flower?

<p>Self pollination (D)</p> Signup and view all the answers

What are some agents of pollination mentioned in the text?

<p>Insects and wind (A)</p> Signup and view all the answers

Which plant coating is specifically found in most above-ground parts?

<p>Cutin (A)</p> Signup and view all the answers

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