Chapter 24, Problem 4STP

Summary Introduction

Introduction :

Non-vascular plants are typically thin, allowing fast passage of materials within them. Such plants are often seen growing in moist, shady areas- an atmosphere that provides the water required for nutrient distribution and reproduction by non-vascular plants.

Answer to Problem 4STP

Correct answer :

The correct answer is option (c) rhizoid

Explanation of Solution

Explanation/justification for the correct answer :

Option (c) rhizoid. Mosses produce root-like, multicellular rhizoids which bind them to soil or other surfaces. Water and minerals dissolved can pass into the rhizoids of a moss. While mosses have some tissue that carries water and food, there is no true vascular tissue in those plants. So, the correct answer is option (c).

Explanation for incorrect answer :

Option (a) chloroplast. Chloroplast, structure that is the source of photosynthesis within plant cells and green algae, the mechanism by which light energy is transformed into chemical energy. So, this is an incorrect answer.

Option (b) mucilage. In plants mucilage plays a part in storing water and food, germinating seeds, and thickening membranes. So, this is an incorrect answer.

Option (d) sporophyte. A sporophyte is the multicellular diploid stage within a plant or alga's life cycle. It derives from the zygote that is formed when a haploid egg cell is fertilized by a haploid sperm and thus each sporophyte cell has a double set of chromosomes, one set per parent. So, this is an incorrect answer.