practical Flashcards
Where are true stomates located in a conifer leaf?
True stomates are located on the undersides of conifer leaves.
Do angiosperm leaves have true stomates?
Yes, angiosperm leaves have true stomates typically located on the lower surface.
What are the main source of photosynthesis in conifers?
Conifers’ true leaves, modified into needlelike structures, are their main source of photosynthesis.
How are the stomates distributed in the Tradescantia zebrina plant?
Stomates are distributed on both the upper and lower epidermis of the Zebrina leaf.
Is Tradescantia zebrina a monocot or eudicot?
Tradescantia zebrina is a eudicot leaf based on its characteristics.
Where is gas exchange known to occur on a Zebrina leaf?
Gas exchange occurs on both the upper and lower epidermis of the Zebrina leaf.
What is the significance of the term ‘Angiosperm’ in Greek?
‘Angio’ means ‘vessel’ and ‘sperm’ means ‘seed’.
When did Angiosperms evolve?
About 140 million years ago from a spermatophyte ancestor.
Why were insect pollinators important in the evolution of Angiosperms?
They led to widespread evolution and diversification of Angiosperms.
What distinguishes Angiosperms as the dominant plant on earth by 100 million years ago?
Their widespread presence and dominance in ecosystems.
Describe the shoot system of Angiosperms.
It comprises strong stems, leaves, and reproductive flowers.
Explain the difference between Eudicots and Monocots.
Eudicots and Monocots have varying structures such as cotyledon numbers, flower petals, and leaf vein arrangements.
Which structures make up the female pistil in a flower?
Stigma, style, and ovary.
What are the structural components of the male stamen in a flower?
Filament and anther.
What is the purpose of sepals in a flower?
They surround and protect the petals.
