MCQ Bank
What is the function of the apical meristem in land plants?
- A) Photosynthesize
- B) Produce spores
- C) Control water loss
- D) Enable continuous upward growth
Why is inbreeding (self-pollination) disadvantageous in plants?
- A) It produces more colorful flowers
- B) It reduces genetic variation and adaptability
- C) It speeds up cross-pollination
- D) It increases flower size
Which awareness message is BEST for protecting plant diversity?
- A) "Plant native species – save forests, save life"
- B) "Invasive species are better than native ones"
- C) "Cut more forests for farming"
- D) "Biodiversity is not important"
Which of the following would you include when designing a pollinator-friendly flower?
- A) Thick ovary wall, small petals
- B) Water-dispersed fruits
- C) Hard seed coat, dry fruits
- D) Bright petals, scent, nectar
If you were to draw a life cycle chart of pine, which step comes right after pollination?
- A) Release of pollen
- B) Seed dispersal
- C) Germination into a sporophyte
- D) Fertilization inside archegonia
Which of the following would be the BEST conservation message?
- A) "Only angiosperms matter, gymnosperms don’t."
- B) "Seed plants are life – preserve biodiversity for food and medicine."
- C) "Plant diversity is useless."
- D) "Cut more trees for fuel."
Why are ferns used as indoor ornamental plants?
- A) They need high sunlight
- B) They thrive in low light
- C) They produce flowers
- D) They repel pests
Why should plant biodiversity be preserved?
- A) To produce only ornamental flowers
- B) Because seed plants are critical for food, medicine, and ecosystem balance
- C) To keep forests green only
- D) To replace angiosperms with gymnosperms
Which adaptation increases reproductive success in angiosperms compared to non-flowering plants?
- A) Absence of seeds
- B) Production of cones instead of flowers
- C) Lack of alternation of generations
- D) Flowers and enclosed ovules for fertilization
When did plants begin to colonize terrestrial land?
- A) 470–500 million years ago
- B) 65 million years ago
- C) 1 billion years ago
- D) 200 million years ago
What is the primary storage form of carbohydrates in both green algae and land plants?
- A) Glucose
- B) Starch
- C) Glycogen
- D) Cellulose
Which structure ensures male gametes reach the ovule?
- A) Cotyledon
- B) Pollen tube
- C) Filament
- D) Microsporangia
What group is considered the closest living ancestor to land plants?
- A) Green algae
- B) Brown algae
- C) Red algae
- D) Cyanobacteria
Which student experiment BEST demonstrates cross-pollination?
- A) Listing flower colors in a garden
- B) Drawing flower diagrams
- C) Writing an essay on wind pollination
- D) Observing bees transferring pollen between two flowers of the same species
Microphylls are:
- A) Compound leaves
- B) Leaves with one vascular strand
- C) Non-vascular leaf-like structures
- D) Broad megaphylls
Deforestation negatively affects human welfare because:
- A) It promotes artificial selection
- B) It increases wood supply permanently
- C) It increases seed production
- D) It reduces diversity of seed plants crucial for food and medicine
A massive tree, 82 m tall with a trunk girth of 23.7 m, belongs to which gymnosperm group?
- A) Conifers
- B) Gnetophytes
- C) Ginkgo
- D) Cycads
Genetic drift causes changes in allele frequencies due to:
- A) Artificial selection
- B) Mutation only
- C) Natural selection
- D) Chance alone or sampling error
What role did unicellular organisms play in Earth's evolutionary timeline?
- A) They were quickly replaced
- B) They gave rise to multicellular life
- C) They formed crystals
- D) They remained unchanged
How can invasive species affect ecosystems?
- A) Increase biodiversity without any harm
- B) Disrupt ecological structure and processes
- C) Have no measurable impact
- D) Improve ecosystem services