Plant Tissue Organisation and Growth

Free sample questions

Plant Tissue Organisation and Growth — sample Biology questions with answers

1. Question 1

   Where is primary meristem tissue found in plants?

   • ARoot tip and shoot tip
   • BBetween xylem and phloem
   • CUnder the stem epidermis
   • DIn the intercellular spaces of leaves

   Answer: A. Root tip and shoot tip

   Primary meristem tissue is located at the root tip and shoot tip for longitudinal growth. The other options are locations of lateral meristem (cambium) or permanent tissue.

2. Question 2

   Which of the following are characteristics of meristem cells?

   • AThick, lignified cell wall
   • BLarge central vacuole
   • CDense cytoplasm and large nucleus
   • DLarge intercellular spaces

   Answer: C. Dense cytoplasm and large nucleus

   Meristem cells have dense cytoplasm, large nucleus, thin cell wall, and small vacuoles. Other options are characteristics of permanent cells such as sclerenchyma or parenchyma.

3. Question 3

   Which tissue is responsible for secondary growth in dicotyledon stems?

   • AApical meristem
   • BIntercalary meristem
   • CVascular cambium
   • DCork cambium

   Answer: C. Vascular cambium

   Vascular cambium produces secondary xylem and phloem for thickening growth. Apical meristem for longitudinal growth, cork cambium produces periderm.

4. Question 4

   Which cells are dead at maturity and function to support the plant?

   • AParenchyma
   • BCollenchyma
   • CSclerenchyma
   • DPhloem

   Answer: C. Sclerenchyma

   Sclerenchyma consists of dead cells with thick lignified walls for support. Parenchyma and collenchyma are living, phloem consists of living and dead cells.

5. Question 5

   The main function of parenchyma tissue in leaves is to

   • ATransport of water
   • BPhotosynthesis
   • CSupport
   • DProtection

   Answer: B. Photosynthesis

   Palisade parenchyma and spongy parenchyma in leaves contain chloroplasts for photosynthesis. Water transport by xylem, support by collenchyma/sclerenchyma, protection by epidermis.