Problem 105 - Objective Biology for NEET

Question

The stem of fabaceae are (a) Erect or climber. (b) Herbaceous rarely woody, aerial, erect, cylindrical, branched solid. (c) Herbaceous with underground bulb/corms/rhizomes (d) All of these

Step-by-Step Solution

Answer

The correct answer is (a) 'Erect or climber' and (b) 'Herbaceous rarely woody, aerial, erect, cylindrical, branched solid'.

Step 1: Understand the Fabaceae Family

The Fabaceae, also known as the pea or legume family, is known for being one of the largest and most important families. This family includes a variety of plants such as peas, beans, and lentils.

Step 2: Identify Characteristics Of Fabaceae Stems

Fabaceae stems can be erect or climber. They are often herbaceous but can sometimes be woody. They are typically aerial, erect, cylindrical, branched, and solid.

Step 3: Compare These Traits With The Choices Given

Looking at the given options: (a) 'Erect or climber' and (b) 'Herbaceous rarely woody, aerial, erect, cylindrical, branched solid' both align with the traits of Fabaceae stems. Choice (c) 'Herbaceous with underground bulb/corms/rhizomes' does not entirely fit as Fabaceae family members do not typically have underground bulbs, corms, or rhizomes.

Step 4: Choose The Correct Answer

Upon comparison, It is clear that options (a) and (b) apply to the Fabaceae stem but option (c) does not. Therefore, the correct answer is not (d) 'All of these.'

Key Concepts

Botany

Botany is a branch of biology that deals with the scientific study of plants, including their physiology, structure, genetics, ecology, distribution, and classification. In botany, understanding the morphological characteristics of different plant families, such as the Fabaceae, is essential. The Fabaceae family, commonly known as the legume family, encompasses a variety of plants with significant ecological and agricultural importance. These plants are known for their ability to fix nitrogen in the soil through symbiotic relationships with bacteria in their root nodules.

Members of the Fabaceae family can be identified by specific stem characteristics. They generally have erect or climbing stems, which can be herbaceous, indicating a softer, non-woody structure, or occasionally woody. This knowledge of stem characteristics plays a crucial role in botany for the classification and identification of plant species within this family.

Plant Morphology

Stem Characteristics in the Fabaceae Family

Plant morphology, the study of the physical form and external structure of plants, is fundamental in understanding how plants are organized and how they interact with their environment. Within the Fabaceae family, stem morphology varies but often exhibits certain common traits. Typically, the stems are aerial and erect, supporting leaves and reproductive structures. The cylindrical shape of the stems of fabaceae helps in providing structural support and enables efficient transportation of water, nutrients, and photosynthates.

The characteristic of being branched and solid is also notable, as branches increase the plant's ability to capture sunlight for photosynthesis, and having a solid stem structure reinforces the plant's mechanical support. Plant morphology, including stem characteristics, aids in identifying plant species and understanding their adaptive strategies in various environments.

NEET Biology

Importance of Plant Families in Preparing for NEET

NEET, the National Eligibility cum Entrance Test, is a significant exam for students aspiring to enter the medical field in India. Biology is a crucial component of the NEET syllabus, encompassing both zoology and botany. A firm grasp of plant families and their distinguishing features is important for NEET preparations, especially in botany.

In the context of NEET Biology, it's essential to identify and understand the characteristics of the Fabaceae family, as these can feature in exam questions. The information about stems being either erect or climbers, usually herbaceous with the possibility of being woody, and having aerial, erect, cylindrical, branched, and solid traits are typical topics in NEET question papers.

• Understanding such specific traits aids in solving taxonomy-related questions effectively.
• Memorizing these key points can help students quickly eliminate incorrect options, just as in the given exercise solution.