Organisation of Plant Tissues and Growth

Question 4:Figure 5 shows a cross-section of a plant stem which lives in a temperate climate. The annual growth rings form a combination of dark and bright growth rings.Estimate the age of the plant. Explain the formation of the annual growth rings.(b)(i) Based on the statement below, what are the advantages of the plants that … Read more

Question 3:Figure 3 shows a growth curve of a plant which lives in a temperate climate.(a) Identify the type of plant and state an example of a plant that has the same growth curve in Figure 3.(b) Why is there a difference in the shape of the growth curve in weeks P and Q?(c) Figure … Read more

Question 1:Figure 1 shows three examples of tissues which are found in plants.Identify tissue A, tissue B and tissue C. State one characteristic and function of each tissue. Answer:Tissue A: Meristematic tissueCharacteristic: Has thin cell walls, large nucleus, dense cytoplasm and small vacuoles.Function: Young tissue that actively divides through mitosisTissue B: Collenchyma tissueCharacteristic: Cells walls … Read more

Question 1:State the classification of plants based on their lifespan. Answer:Plants can be classified based on their lifespan: annual plants, biennial plants and perennial plants. Question 2:Based on your knowledge in biology, specify the types of plants that are able to survive in extreme surroundings. Discuss. Answer:Perennial plants. These plants have structures that are adaptable … Read more

Question 1:Name the three zones of cell growth. Answer:The three zones of cell growth are the zone of cell division, zone of cell elongation and zone of cell differentiation. Question 2:The figure below shows a cross-section of a plant stem that undergoes secondary growth.(a) Label the primary xylem, primary phloem, secondary xylem and secondary phloem.(b) … Read more

Question 1:State an example of cell modified from epidermal cells. Answer:Guard cell / Root hair cell Question 2:Explain the differences of parenchyma, collenchyma and sclerenchyma tissues. Answer:• Parenchyma tissue is the simplest living cell and do not undergo differentation. Collenchyma tissue is made of living cells which mature into cells that are flexible. Sclerenchyma tissues … Read more