MCQ Bank

Seeds are evolutionarily advantageous because they protect the embryo, contain stored nutrients, and can remain dormant during unfavorable conditions. Spores generally lack these protective and nutritional advantages.

BT201 Final Term AI Solved

Q81

Which vascular tissue transports water from roots to other parts?

A) Xylem
B) Cambium
C) Phloem
D) Epidermis

AI Explanation

Xylem is the vascular tissue responsible for transporting water and minerals from roots to the rest of the plant. It consists mainly of specialized cells adapted for water conduction.

BT201 Final Term AI Solved

Q82

Why do bryophytes reduce the impact of rain on soil?

A) Because they repel water
B) Because they absorb the impact and water
C) Because they grow underground
D) Because they are tall plants

AI Explanation

Bryophytes form mats that absorb rainfall and retain moisture, reducing the force of water hitting the soil. This helps prevent soil erosion.

BT201 Final Term AI Solved

Q83

What is the primary feature of roots that ensures water absorption?

A) Cuticle
B) Leaf veins
C) Root cap
D) Root hairs

AI Explanation

Root hairs increase the surface area of roots and are the main structures responsible for efficient water and mineral absorption from the soil. They provide close contact with soil particles.

BT201 Final Term AI Solved

Q84

What is the scientific study of pollen called?

A) Botany
B) Palynology
C) Dendrology
D) Mycology

AI Explanation

Palynology is the scientific study of pollen, spores, and other microscopic organic particles. It is used in fields such as botany, ecology, and geology.

BT201 Final Term AI Solved

Q85

What feature allows megaphylls to adapt to reduced CO₂ levels?

A) Vascular cambium
B) Decreased chloroplasts
C) Lack of veins
D) Presence of stomata and increased surface area

AI Explanation

Megaphylls are large leaves with extensive surface area and stomata that improve gas exchange. These features help plants adapt to changes in carbon dioxide availability by increasing photosynthetic efficiency.

BT201 Final Term AI Solved

Q86

Which plant is used in Europe as a renewable fuel source?

A) Club Moss
B) Fern
C) Rhododendron
D) Sphagnum

AI Explanation

Sphagnum moss is used as a renewable fuel source in parts of Europe because accumulated peat from Sphagnum can be burned as fuel. It also plays important ecological roles in wetland ecosystems.

BT201 Final Term AI Solved

Q87

What does the word Bryophyte mean in Greek origin?

A) Moss plants
B) Water plants
C) Tiny herbs
D) Green plants

AI Explanation

The word Bryophyte comes from Greek roots meaning moss plants. Bryophytes include mosses, liverworts, and hornworts.

BT201 Final Term AI Solved

Q88

Which structure allows plants to absorb water and nutrients from soil?

A) Stems
B) Phloem
C) Roots
D) Leaves

AI Explanation

Roots anchor plants and absorb water and nutrients from the soil. They contain specialized structures such as root hairs that increase absorption efficiency.

BT201 Final Term AI Solved

Q89

What are the main photosynthetic pigments shared by green algae and plants?

A) Chlorophyll b and hemoglobin
B) Chlorophyll c and d
C) Xanthophyll only
D) Chlorophyll a, chlorophyll b, carotenoids

AI Explanation

Green algae and plants share the main photosynthetic pigments chlorophyll a, chlorophyll b, and carotenoids. These pigments capture light energy for photosynthesis.

BT201 Final Term AI Solved

Q90

What made angiosperms more successful than gymnosperms?

A) Absence of vascular tissues
B) Cross-breeding and formation of diverse flowers & fruits
C) Naked seeds
D) Slower reproductive cycles

AI Explanation

Angiosperms became highly successful due to diverse flowers that attract pollinators and fruits that aid seed protection and dispersal. Cross-pollination increases genetic diversity and adaptation to changing environments.

BT201 Final Term AI Solved

Q91

What protects plant tissues from desiccation in dry environments?

A) Cuticle
B) Vascular tissue
C) Leaves
D) Stomata

AI Explanation

The cuticle is a waxy protective layer on plant surfaces that reduces water loss. It helps plants survive in dry environments by preventing desiccation.

BT201 Final Term AI Solved

Q92

Which situation would reduce plant survival chances in changing environments?

A) Dependence only on self-pollination
B) Presence of multiple pollinators
C) Cross-pollination between different plants
D) Production of nectar-rich flowers

AI Explanation

Plants relying only on self-pollination have reduced genetic variation, which can limit adaptation to environmental changes. Cross-pollination increases genetic diversity and survival potential.

BT201 Final Term AI Solved

Q93

Why are insects important for angiosperm reproduction?

A) They provide water to flowers
B) They help fruits to ripen
C) They thicken the ovary wall
D) They carry pollen between flowers

AI Explanation

Insects act as pollinators by transferring pollen from one flower to another. This facilitates fertilization and supports reproduction in many angiosperms.

BT201 Final Term AI Solved

Q94

Which sequence correctly represents the life cycle of angiosperms?

A) Zygote → Gametophyte → Sporophyte → Seed
B) Gametophyte → Sporophyte → Spore → Zygote
C) Seed → Gametophyte → Sporophyte → Zygote
D) Sporophyte → Gametophyte → Zygote → Seed → Sporophyte

AI Explanation

The angiosperm life cycle begins with the dominant sporophyte producing gametophytes. Fertilization forms a zygote, which develops into a seed that grows into a new sporophyte.

BT201 Final Term AI Solved

Q95

What is the function of sporangia in plants?

A) Produce gametes
B) Absorb nutrients
C) Produce walled spores
D) Provide mechanical support

AI Explanation

Sporangia are specialized structures in plants and fungi that produce and contain spores. These spores are protected by walls and can develop into new individuals.

BT201 Final Term AI Solved

Q96

When did plants first begin to colonize land?

A) Silurian Period
B) Jurassic Period
C) Devonian Period
D) Cambrian Period

AI Explanation

Plants first began colonizing land during the Silurian Period, around 430 million years ago. Early land plants evolved adaptations that helped them survive outside aquatic environments.

BT201 Final Term AI Solved

Q97

Which student project BEST demonstrates pollination?

A) Listing types of flowers
B) Observing bees transferring pollen in a garden
C) Drawing a flower diagram
D) Writing names of pollinators

AI Explanation

Observing bees moving pollen between flowers directly demonstrates the process of pollination. It shows how pollinators help transfer male gametes for plant reproduction.

BT201 Final Term AI Solved

Q98

Why did angiosperms rapidly diversify?

A) Dependence on water for reproduction
B) Outcrossing favored genetic diversity
C) Thick spore walls
D) Aquatic-only reproduction

AI Explanation

Angiosperms diversified rapidly because outcrossing increased genetic variation and improved adaptation. Their flowers also promoted specialized relationships with pollinators.

BT201 Final Term AI Solved

Q99

Fertilization and seed maturation in pines take up to 2 years because:

A) Embryo develops outside the ovule
B) Female gametophyte develops very slowly
C) Pollen grains remain dormant for years
D) Pollination is water-dependent

AI Explanation

In pine trees, the female gametophyte develops slowly, causing fertilization and seed maturation to take a long time. This extended reproductive cycle is characteristic of many gymnosperms.