Problem 36 - Objective Biology for NEET

Question

How many types of cells are present in complex tissue? (a) More than one (b) More than three (c) One type (d) Three type

Step-by-Step Solution

Answer

The correct answer is (a), complex tissues contain more than one type of cell.

Step 1: Understanding the Question

First, understand what is meant by 'complex tissue'. In biology, a complex tissue is a type of plant tissue that is formed by more than one type of cell and performs more than one function.

Step 2: Recall the Complexity of Tissues

Next, recall that complex tissues, unlike simple tissues, can consist of many different types of cells. For example, vascular tissue in plants is a type of complex tissue that contains different types of cells.

Step 3: Choose the Correct Answer

From the information gathered, conclude that complex tissues contain more than one type of cell. So, option (a) is the correct answer.

Key Concepts

Plant Cell Types

To understand the biodiversity within plant organs, it's important to start by exploring the various plant cell types. Just like in animals, different types of cells serve differentiated and specialized functions. In the context of complex tissues, we observe that these tissues are composed of more than one type of cell. This variety is pivotal for the multitude of tasks assigned to these tissues.

For instance, in the leaves, you'd find palisade cells which are specialized for photosynthesis with their elongated shape maximizing light absorption. On the other hand, guard cells control the opening and closing of stomata, thus regulating gas exchange and water release. In the stem, sclerenchyma cells provide structural support with their thick lignified walls. Cells within complex tissues work in harmony, each type contributing its unique function to the tissue’s overall role in the plant's physiology.

Understanding this diversity is crucial for students preparing for competitive exams like NEET, where questions often dive into the functional attributes of these cell types.

Vascular Tissue

Plants have a transportation system, known as vascular tissue, consisting of xylem and phloem. Xylem is responsible for the transport of water and minerals from the roots throughout the plant, and is made up of several types of cells, including tracheids and vessel elements. These are specialized cells evolved to maximize efficiency in water transport, as well as providing structural support.

Key Functions of Vascular Tissue

Phloem, on the other hand, transports sugars and other organic nutrients produced by the plant during photosynthesis. This complex tissue also has a variety of cells, including sieve tube elements and companion cells, each with essential roles in nutrient transport and communication within the plant.

These vascular tissues are classic examples of complex tissues that utilize diverse cell types to perform the critical functions of nutrient and water transport, which are indispensable for the survival and growth of the plant. Insights into these systems are often tested in biology exams and are a key topic for NEET preparation as well.

Biology NEET Preparation

Preparing for the National Eligibility cum Entrance Test (NEET) requires a deep understanding of complex biological concepts, including complex tissues in plants. Strategies for biology NEET preparation should involve a comprehensive approach, focusing on understanding rather than rote memorization.

To excel in the botany section, for instance, a student should grasp the intricacies of the plant anatomy and physiology, including the diverse cell types in complex tissues, their functions, and how they interrelate in processes like transpiration and photosynthesis.

Effective Study Techniques

Using diagrams and comparison charts can be effective techniques for visualizing and remembering these complex tissues and their components. Regular revisions and practice exams will help reinforce this knowledge, while peer discussions can provide new insights and aid in cementing concepts. By focusing on these key study points, NEET aspirants can ensure they are well-equipped to tackle exam questions on topics such as complex tissues.