A flower made up of one carpel is referred to as

Step 1: Analyze the question The question asks for the term used to describe a flower with only one carpel (the female part of the flower, made up of stigma, style and ovary).

Step 2: Explain the concept Flowers are described by the number and arrangement of their carpels:

• Monocarpous: the flower has a single carpel (e.g., pea, beans, and other legumes).
• Apocarpous: the flower has several carpels that are free from one another (e.g., the rose).
• Syncarpous: the flower has several carpels that are fused together (e.g., hibiscus, tomato).
• Pericarp: this is not a flower type. It is the wall of the fruit.
• Monogamous: this has nothing to do with flower structure. It refers to having one mate.

Step 3: Work through the options

• A. Apocarpous: many free carpels, so it is wrong.
• B. Monocarpus (the spelling of "monocarpous"): one carpel, so it is correct.
• C. Monogamous: not a botanical term for carpels, so it is wrong.
• D. Pericarpus: related to the fruit wall, so it is wrong.
• E. Syncarpous: fused carpels, so it is wrong.

Step 4: Answer The correct option is B. The spelling "monocarpus" is a slight variant of "monocarpous", but it is clearly the intended answer.

Tip: Use the prefixes: mono = one, apo = separate, syn = together. So monocarpous means one carpel, apocarpous means separate carpels, and syncarpous means joined carpels.