Chapter Exam

Chapter 4: Reproductive Morphology — Online MCQ Test

Q: In which type of inflorescence are the flowers borne on a single elongated main axis in a sequence from base to apex?

Answer: A. Raceme — In a raceme, the main axis continues to grow and bears flowers on pedicels in acropetal succession. This is a basic racemose inflorescence.

Q: Which of the following is a complete flower?

Answer: B. Flower with sepals, petals, stamens and carpels — A complete flower possesses all four floral whorls: calyx, corolla, androecium and gynoecium.

Q: Which inflorescence is characteristic of sunflower?

Answer: C. Capitulum — Sunflower shows a capitulum or head inflorescence, where many small florets are arranged on a flattened receptacle.

Q: Which of the following is NOT a racemose inflorescence?

Answer: C. Cyme — Cyme is a cymose inflorescence, where the main axis ends in a flower. Raceme, spike and umbel are racemose types.

Q: A student observes a fruit that develops from a single flower having many free carpels. Which term is most accurate?

Answer: B. Aggregate fruit — Aggregate fruits develop from a single flower with many free carpels, and each carpel forms a small fruitlet. This differs from multiple fruits, which develop from many flowers.

BOTANY · CLASS 11th · Tamil Nadu State Board

Practice Chapter 4: Reproductive Morphology with a free chapter-wise online MCQ test for Tamil Nadu State Board CLASS 11th BOTANY. This chapter covers: Focusing on plant reproduction this chapter details inflorescence types flower anatomy floral diagrams and floral formulas. Students examine estivation types fruit classifications.... AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 4: Reproductive Morphology — Important Questions & Answers (FAQ)

Frequently asked questions from Tamil Nadu State Board CLASS 11th BOTANY — Chapter 4: Reproductive Morphology, with answers and explanations. These are sample questions; the exam has its own separate question set.

In which type of inflorescence are the flowers borne on a single elongated main axis in a sequence from base to apex?

A. Raceme ✓
B. Umbel
C. Capitulum
D. Spikelet

Answer: A. Raceme
In a raceme, the main axis continues to grow and bears flowers on pedicels in acropetal succession. This is a basic racemose inflorescence.

Which of the following is a complete flower?

A. Flower with only stamens
B. Flower with sepals, petals, stamens and carpels ✓
C. Flower with only petals and stamens
D. Flower with only sepals and carpels

Answer: B. Flower with sepals, petals, stamens and carpels
A complete flower possesses all four floral whorls: calyx, corolla, androecium and gynoecium.

Which inflorescence is characteristic of sunflower?

A. Spike
B. Cyme
C. Capitulum ✓
D. Panicle

Answer: C. Capitulum
Sunflower shows a capitulum or head inflorescence, where many small florets are arranged on a flattened receptacle.

Which of the following is NOT a racemose inflorescence?

A. Raceme
B. Spike
C. Cyme ✓
D. Umbel

Answer: C. Cyme
Cyme is a cymose inflorescence, where the main axis ends in a flower. Raceme, spike and umbel are racemose types.

A student observes a fruit that develops from a single flower having many free carpels. Which term is most accurate?

A. Simple fruit
B. Aggregate fruit ✓
C. Multiple fruit
D. Dehiscent fruit

Answer: B. Aggregate fruit
Aggregate fruits develop from a single flower with many free carpels, and each carpel forms a small fruitlet. This differs from multiple fruits, which develop from many flowers.

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Chapter 5: Taxonomy and Systematic Botany