All of the following are protozoans a)mushrooms b)amoebas c)paramecium d)euglena

The correct answer is - A) Mushrooms.

Protozoa is one the diverse groups of single celled eukaryotic organisms, which belong to the kingdom Protista.

The organisms in this kingdom are are basically single celled (that is made up of single cell) and exist separately as well as in the form of aggregates (forming colonies).

Example of Protozoa- Amoeba, Paramecium, Euglena.

Mushrooms belong to the kingdom Fungi.

Fungi is a kingdom of eukaryotic, mostly multi-cellular, non- photosynthetic, heterotrophic organisms.

Most of these organisms grow as tubular structures, known as hyphae, which collectively forms a mycelium ( vegetative part of fungus).

Thus, option A) Mushrooms is the right answer.

fertilization, pictured in figure 24.23a is the process in which gametes (an egg and sperm) fuse to form a zygote. the egg and sperm each contain one set of chromosomes. to ensure that the offspring has only one complete diploid set of chromosomes, only one sperm must fuse with one egg. in mammals, the egg is protected by a layer of extracellular matrix consisting mainly of glycoproteins called the zona pellucida. when a sperm binds to the zona pellucida, a series of biochemical events, called the acrosomal reactions, take place. in placental mammals, the acrosome contains digestive enzymes that initiate the degradation of the glycoprotein matrix protecting the egg and allowing the sperm plasma membrane to fuse with the egg plasma membrane, as illustrated in figure 24.23b. the fusion of these two membranes creates an opening through which the sperm nucleus is transferred into the ovum. the nuclear membranes of the egg and sperm break down and the two haploid genomes condense to form a diploid genome.

explanation:

the food storage products of chrysophytes are oils or the polysaccharide laminarin.   formerly classified as plants, the chrysophytes contain the photosynthetic pigments chlorophyll a and c all but the yellow-green algae also contain the carotenoid pigment fucoxanthin.