Problem 48 - Objective Biology for NEET

Question

Which of the following pair represent insectivorous plant? (a) Pitcher plant, australian acacia (b) Venus fly trap, calotropis (c) Pitcher plant, venus fly trap (d) Silk cotton, neem

Step-by-Step Solution

Answer

The pair representing insectivorous plants is (c) Pitcher plant, venus fly trap

Step 1: Identify Insectivorous Plants

Start by identifying which of the given plants are insectivorous. Insectivorous plants include the pitcher plant and the venus fly trap. Australian acacia, calotropis, silk cotton, and neem are not insectivorous plants.

Step 2: Match the Pairs

Match the pairs given in options with the insectivorous plants identified in step 1. The only pair consisting of two insectivorous plants is the Pitcher plant and Venus fly trap.

Key Concepts

Pitcher Plant

A pitcher plant is a fascinating type of insectivorous plant with remarkable adaptations for capturing and digesting insects. One notable feature of pitcher plants is their modified leaves, which have evolved into the shape of a pitcher or deep cavity. This unique structure is designed to trap insects. The pitchers often have a slippery rim and produce a digestive fluid at their base, which helps break down prey to absorb essential nutrients. This adaptation enables them to thrive in nutrient-poor environments where other plants might struggle. These plants lure insects with their bright colors and sweet nectar. Once the insects fall into the pitcher, the slippery surface and downward-pointing hairs prevent their escape. With an array of species thriving in different parts, pitcher plants exhibit diverse trapping mechanisms, yet all share the common trait of being carnivorous thrive.

Venus Fly Trap

The Venus flytrap is another intriguing insectivorous plant known for its "snap trap" mechanism. Each leaf consists of two hinged lobes that look like a jaw, and when an unsuspecting insect lands on a hair inside the trap, it will snap shut quickly. This rapid movement is activated by tiny trigger hairs on the inner surfaces of the lobes. The Venus flytrap digests its prey using enzymes, breaking down soft tissues while extracting nutrients essential for growth.

• Rapid snap action helps prevent prey from escaping.
• Trigger hairs ensure that the trap is only triggered when an insect lands, conserving the plant's energy.

Venus flytraps are native to North and South Carolina and prefer humid, boggy environs with acidic soil. As fascinating as it is, the plant primarily uses its dietary acquisitions to supplement its nutrient intake from the poor soil conditions.

Plant Identification

Plant identification is a crucial skill in understanding ecosystems and aiding in conservation efforts. It involves recognizing and categorizing plants based on specific characteristics such as leaf shape, flower type, growth habit, and other distinctive features. For identifying insectivorous plants like pitcher plants and Venus flytraps, look for unique adaptations geared towards trapping and digesting insects.

• Pitcher plants are identifiable by their tubular leaves that form "pitchers." These structures serve as traps for insects.
• Venus flytraps, on the other hand, can be identified by their jaw-like leaves and hinged lobe structure.

By noting these key characteristics, one can accurately determine the group to which a plant belongs, aiding in both ecological studies and educational pursuits. Learning about such adaptations also highlights the remarkable versatility and survival mechanisms of plants in various environments.