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Answers
1 hypotonic
2 The xylem conducts only in one direction i.e vertically. The xylem parenchyma is responsible for storing the prepared food and assists in the conduction of water. Xylem fibres are supportive in function. Phloem- It consists of four of elements: sieve tubes, companion cells, phloem fibres and the phloem parenchyma.
3 a. A bone is a connective tissue where the living cells, tissues, and other components are enclosed within hard non-living intercellular material. Cartilage is a strong, flexible, fibrous tissue that forms rubber-like padding at the ends of long bones that help in the movement of bones.
b The main difference between areolar and adipose tissue is that the areolar tissue fills the space between organs, supporting internal organs whereas the adipose tissue serves as the fat reservoir and thermal insulator.
c A nucleus is a membrane-bound structure in which eukaryotes assemble their genetic materials. Nucleoid is a particular area in which prokaryotes assemble their genetic materials.
d Tendons may also attach muscles to structures such as the eyeball. A tendon serves to move the bone or structure. A ligament is a fibrous connective tissue which attaches bone to bone, and usually serves to hold structures together and keep them stable.
e Squamous epithelium has cells that are wider than their height (flat and scale-like). ... Cuboidal epithelium has cells whose height and width are approximately the same (cube shaped). Columnar epithelium has cells taller than they are wide (column-shaped).
4 a. Meiosis is called reductional division because number of chromosomes and amount of DNA in daughter cells is reduced to half than that of parent cell. In meiosis diploid number of chromosomes is reduced to haploid number.
b. When person drinks concentrated salt solution then it eventually reaches to intestine. As salt solution contains more solutes than nearby tissues, then the water from those tissues start moving to intestine. This process is endosmosis in which the water molecules move from lower solute concentration to higher solute concentration through intestinal wall. Intestine cannot tolerate strain due to extra incoming water and hence, the extra water is spilled out through vomiting.
c. Dry apricots when placed in pure water swell due end osmosis (inward movement of water) and later when are transferred sugar solution exosmosis (outward movement of water) occurs and they shrink again.
by bro Sunny