NEET BIOLOGY

Detailed explanation-1: -At the bottom is a root-like structure called a “holdfast” that anchors kelp to rocks and other materials on the ocean floor. Young kelp must compete for space to settle and grow, as the rocky bottom is carpeted with smaller algae and invertebrates like anemones and sponges. The stipe is similar to a plant’s stem.

Detailed explanation-2: -The part of kelp most similar in appearance and location to the roots of plants is called the holdfast. This spaghetti like structure has a primary function of securing the organism to the sea floor; holding it “fast” in all but the most turbulent conditions.

Detailed explanation-3: -Seaweeds are generally anchored to the sea bottom or other solid structures by rootlike “holdfasts, ” which perform the sole function of attachment and do not extract nutrients as do the roots of higher plants. A number of seaweed species are edible, and many are also of commercial importance to humans.

Detailed explanation-4: -Seaweeds can have holdfasts that help them cling to rocks. (Holdfasts do not transport nutrients or water, they just hold the base of the seaweed in one place).

Detailed explanation-5: -A holdfast does not serve as a pipeline for material but literally does “hold” seaweed “fast” to rocks, keeping the seaweed anchored. Holdfasts and prop roots, along with the whole plants of SAVs, physically provide protected environments where juvenile fish and other marine organisms can be nurtured and sheltered.