Anatomy of Flowering Plants (Class - XI)
Anatomy of Flowering Plants (Class - XI)
Questions
Which of the following is a difference between monocots and dicots?
- Leaf venation in dicots is parallel and is reticulate in monocots.
- Embryo has 2 cotyledons in dicots and 3 or multiples of 3 in monocots.
- Floral parts of dicots are multiples of 4 and 5 and multiples of 3 in monocots.
- Vascular bundles are in bundles in monocots and scattered in dicots.
Trichomes are characteristics of
- epidermis
- hypodermis
- cortex
- endodermis
The characteristic thickenings present on the radial and transverse walls of endodermis are
- casparian strips
- bundle caps
- bundle sheaths
- passage cells
The vascular bundles of a monocot stem are
- collateral and closed
- collateral and open
- radially arranged and open
- radially arranged and closed
Protosteles are found in
- bryophyta
- gymnosperms
- pteridophyta
- angiosperms
Girdling of a tree involves the removal of
- xylem
- phloem
- xylem and phloem
- vascular cambium
Directions: The following question has four choices out of which ONLY ONE is correct.
In a flowering plant, i.e an angiosperm, sugars are transported
- upward in the xylem
- upward in the phloem
- both upward & downward in the phloem
- both upward & downward in the xylem
Which of the following is a dead mechanical tissue?
- Parenchyma
- Chlorenchyma
- Sclerenchyma
- Collenchyma
Periblem gives rise to
- cortex
- stele
- epidermis
- pith
Organisation of stem apex into corpus and tunica is determined mainly by
- planes of cell division
- regions of meristematic activity
- rate of cell growth
- rate of shoot tip growth
Which of the following statements does NOT characterise monocots?
- Some monocots, such as grass, have hypogeal emergence.
- Monocots have atactostele type of vascular tissues.
- Many monocots are herbaceous and do not show secondary growth.
- Many monocots have leaves with reticulate veins.
- The monocots are considered to form a monophyletic group arising early in the history of the flowering plants.
Which of the following statements regarding dicots is false?
- The seedpod can have any number of chambers, from none to many.
- The flowers of dicots usually have flower parts in fours or fives.
- The stems of dicots are usually tough.
- When a dicot germinates, it produces numerous seed leaves.
- Dicots have two seed leaves inside the seed coat.