🌱 Diversity in Living Organisms – Class 9 Science MCQs

Section 3: Plant Kingdom – Algae to Angiosperms (Q51–Q75)

Q51. Which of the following are the simplest plants?

A. Fungi
B. Algae
C. Bryophytes
D. Angiosperms

✅ Correct Answer: B. Algae

Explanation:

• A. Fungi → Not plants.
• B. Correct, algae are simple, autotrophic plants, mostly aquatic.
• C. Bryophytes → More advanced, land plants.
• D. Angiosperms → Most advanced flowering plants.

Q52. Which algae are red in color?

A. Rhodophyta
B. Phaeophyta
C. Chlorophyta
D. Cyanobacteria

✅ Correct Answer: A. Rhodophyta

Explanation:

• A. Correct, red algae (Rhodophyta) contain phycoerythrin.
• B. Brown algae = Phaeophyta.
• C. Green algae = Chlorophyta.
• D. Cyanobacteria → Monera, not true algae.

Q53. Green algae store food as:

A. Oil
B. Starch
C. Fat
D. Protein

✅ Correct Answer: B. Starch

Explanation:

• A. Oil storage in brown algae.
• B. Correct, green algae store food in the form of starch.
• C. Fat not main.
• D. Proteins not main.

Q54. Bryophytes are known as:

A. Amphibians of the plant kingdom
B. Algae of land
C. Seedless vascular plants
D. Flowering plants

✅ Correct Answer: A. Amphibians of the plant kingdom

Explanation:

• A. Correct, bryophytes live in moist soil but need water for reproduction.
• B. Wrong.
• C. Pteridophytes are vascular.
• D. Angiosperms are flowering.

Q55. Example of a bryophyte is:

A. Spirogyra
B. Funaria
C. Fern
D. Pinus

✅ Correct Answer: B. Funaria

Explanation:

• A. Spirogyra → Algae.
• B. Correct, Funaria is a moss (bryophyte).
• C. Fern → Pteridophyte.
• D. Pinus → Gymnosperm.

Q56. Bryophytes lack:

A. Roots
B. Stems
C. Vascular tissues
D. All of these

✅ Correct Answer: D. All of these

Explanation:

• A, B. True, bryophytes have rhizoids, not true roots/stems.
• C. Correct, no vascular tissue.
• D. Correct, all are absent.

Q57. Which group of plants were the first to have vascular tissues?

A. Algae
B. Bryophytes
C. Pteridophytes
D. Gymnosperms

✅ Correct Answer: C. Pteridophytes

Explanation:

• A. No vascular tissue.
• B. None.
• C. Correct, ferns and pteridophytes = first vascular land plants.
• D. Gymnosperms evolved later.

Q58. Which of the following is a pteridophyte?

A. Moss
B. Fern
C. Spirogyra
D. Funaria

✅ Correct Answer: B. Fern

Explanation:

• A. Moss = Bryophyte.
• B. Correct, fern = pteridophyte.
• C. Spirogyra = Algae.
• D. Funaria = Bryophyte.

Q59. Pteridophytes reproduce by:

A. Seeds
B. Spores
C. Flowers
D. Fruits

✅ Correct Answer: B. Spores

Explanation:

• A. Seeds absent in pteridophytes.
• B. Correct, they are spore-producing vascular plants.
• C & D. Only in angiosperms.

Q60. Which group of plants produce naked seeds?

A. Bryophytes
B. Pteridophytes
C. Gymnosperms
D. Angiosperms

✅ Correct Answer: C. Gymnosperms

Explanation:

• A. Bryophytes → No seeds.
• B. Pteridophytes → Spores.
• C. Correct, gymnosperms = naked seeds (no fruit).
• D. Angiosperms → Enclosed seeds in fruits.

Q61. Example of a gymnosperm is:

A. Funaria
B. Pinus
C. Spirogyra
D. Fern

✅ Correct Answer: B. Pinus

Explanation:

• A. Funaria → Bryophyte.
• B. Correct, Pinus = gymnosperm.
• C. Spirogyra → Algae.
• D. Fern → Pteridophyte.

Q62. Angiosperms are characterized by:

A. Flowers and fruits
B. Naked seeds
C. Spores only
D. Absence of vascular tissues

✅ Correct Answer: A. Flowers and fruits

Explanation:

• A. Correct, angiosperms bear flowers + seeds enclosed in fruits.
• B. Gymnosperms.
• C. Pteridophytes.
• D. Angiosperms have vascular tissues.

Q63. Double fertilization is found in:

A. Gymnosperms
B. Angiosperms
C. Pteridophytes
D. Bryophytes

✅ Correct Answer: B. Angiosperms

Explanation:

• A. Gymnosperms → Single fertilization.
• B. Correct, double fertilization unique to angiosperms.
• C. Pteridophytes reproduce via spores.
• D. Bryophytes → Water needed for fertilization.

Q64. Which plant group is most advanced evolutionarily?

A. Algae
B. Bryophytes
C. Pteridophytes
D. Angiosperms

✅ Correct Answer: D. Angiosperms

Explanation:

• A. Simple aquatic plants.
• B. Primitive land plants.
• C. Seedless vascular plants.
• D. Correct, angiosperms most advanced.

Q65. Which of these produces seeds enclosed in fruits?

A. Gymnosperms
B. Angiosperms
C. Bryophytes
D. Pteridophytes

✅ Correct Answer: B. Angiosperms

Explanation:

• A. Naked seeds.
• B. Correct, unique to angiosperms.
• C, D. No seeds.

Q66. Monocotyledons differ from dicotyledons in having:

A. One cotyledon in seed
B. Two cotyledons in seed
C. Naked seeds
D. Spores only

✅ Correct Answer: A. One cotyledon in seed

Explanation:

• A. Correct, monocots = 1 cotyledon.
• B. Dicots = 2 cotyledons.
• C. Gymnosperms.
• D. Pteridophytes.

Q67. Parallel venation is seen in:

A. Monocots
B. Dicots
C. Gymnosperms
D. Bryophytes

✅ Correct Answer: A. Monocots

Explanation:

• A. Correct, monocots (grasses, maize) = parallel venation.
• B. Dicots = reticulate venation.
• C. Naked seed plants, not leaves type.
• D. Non-vascular.

Q68. Reticulate venation is characteristic of:

A. Monocots
B. Dicots
C. Gymnosperms
D. Algae

✅ Correct Answer: B. Dicots

Explanation:

• A. Monocots → parallel venation.
• B. Correct, dicots (peepal, mango).
• C. Gymnosperms = needle leaves.
• D. Algae → simple thallus.

Q69. Example of monocot plant is:

A. Wheat
B. Mango
C. Rose
D. Pea

✅ Correct Answer: A. Wheat

Explanation:

• A. Correct, wheat = monocot (1 cotyledon).
• B. Mango = dicot.
• C. Rose = dicot.
• D. Pea = dicot.

Q70. Example of dicot plant is:

A. Maize
B. Pea
C. Rice
D. Sugarcane

✅ Correct Answer: B. Pea

Explanation:

• A. Maize = monocot.
• B. Correct, pea = dicot (2 cotyledons).
• C. Rice = monocot.
• D. Sugarcane = monocot.

Q71. Which plants are seedless vascular plants?

A. Algae
B. Bryophytes
C. Pteridophytes
D. Gymnosperms

✅ Correct Answer: C. Pteridophytes

Explanation:

• A, B → Non-vascular.
• C. Correct, pteridophytes = vascular but reproduce by spores.
• D. Gymnosperms have seeds.

Q72. Which plants are called phanerogams?

A. Algae
B. Bryophytes
C. Seed-bearing plants
D. Spore-bearing plants

✅ Correct Answer: C. Seed-bearing plants

Explanation:

• A. Algae → No seeds.
• B. Bryophytes → No seeds.
• C. Correct, phanerogams = seed plants (gymnosperms + angiosperms).
• D. Wrong.

Q73. Gymnosperms differ from angiosperms in:

A. Having flowers
B. Having naked seeds
C. Having vascular tissues
D. Having roots, stems, leaves

✅ Correct Answer: B. Having naked seeds

Explanation:

• A. Flowers = angiosperms.
• B. Correct, gymnosperms → naked seeds.
• C. Both have vascular tissues.
• D. Both have organs.

Q74. Angiosperms are divided into:

A. Algae and fungi
B. Monocots and dicots
C. Bryophytes and pteridophytes
D. Gymnosperms and angiosperms

✅ Correct Answer: B. Monocots and dicots

Explanation:

• A, C, D → Not correct.
• B. Correct, flowering plants classified into monocots and dicots.

Q75. Which of the following is a dicot plant?

A. Rice
B. Maize
C. Mango
D. Wheat

✅ Correct Answer: C. Mango

Explanation:

• A. Rice = monocot.
• B. Maize = monocot.
• C. Correct, mango is a dicot.
• D. Wheat = monocot.

Diversity in Living Organisms Class 9, CBSE Class 9 Science MCQs, NCERT Class 9 diversity questions, Class 9 Science exam practice, Online learning Science Class 9, diversity in living organisms class 9 mcqs with answers, cbse class 9 science diversity in living organisms multiple choice questions, ncert class 9 diversity in living organisms quiz online, important mcqs for cbse class 9 science diversity chapter, diversity in living organisms class 9 mcqs for online learning