Plant tissues and anatomy of root, stem, leaf
Top questions
See all →- Find the statement that is NOT correct with regard to the structure of monocot stem. Answer: 1. Hypodermis is parenchymatous. Key idea: In a monocot stem the hypodermis is sclerenchymatous, not parenchymatous. The other state... 1
- Bulliform cells are responsible for Answer: 2. Inward curling of leaves in monocots. Key idea: bulliform cells are large colourless cells on the upper epidermis of grass leaves... 1
- In the given figure, which component has thin outer walls and highly thickened inner walls? Answer: 2. C Key idea: in dicot guard cells the wall facing the stomatal pore (inner wall) is thick and the outer wall is thin. In the figur... 1
- Given below are two statements:Statement I : Parenchyma is living but collenchyma is dead tissue.Statement II : Gymnosperms lack xylem vessels but presence of xylem vessels is the characteristic of angiosperms.In the light of the above statements, ch… Answer: 1. Statement I is false but Statement II is true Key idea: check each statement against tissue properties. Statement I: Parenchyma i... 1
- Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R :Assertion A : Late wood has fewer xylary elements with narrow vessels.Reason R : Cambium is less active in winters.In the light of the above statem… Answer: 2. Both A and R are true and R is the correct explanation of A. Key idea: In winter the cambium is less active and forms fewer xylar... 1
- Given below are two statements :Statement I : Endarch and exarch are the terms often used for describing the position of secondary xylem in the plant body.Statement II : Exarch condition is the most common feature of the root system.In the light of t… Answer: 1. Statement I is incorrect but Statement II is true. Key idea: Endarch and exarch describe the position of primary xylem. Statement... 1