Biology Test - 10

Humans belong to Phylum Chordata because of the presence of an embryonic notochord. Since this notochord gets replaced with a vertebral column in the fully developed humans, they belong to subphylum Vertebrata. Further, since they have a jawline, they belong to Division Gnathostomata. Mammalia is a class under Gnathostomata.

Hence option C is the correct answer.

Proteins, at times, may be simple in structure, but in significance, they play a major role. They function to help in Catalysis, Structural integrity, Functional integrity and as Constituents.

For example; simple proteins like Keratin and Collagen provide Structural integrity.

Hence option B is the correct answer.

Triticum aestivum is the scientific name of wheat. Triticum is the genus name while aestivum is the species name.

Pisces is the class to which fishes belong.

Man belongs to order primate and family hominidae.

Mango belongs to class dicotyledonae and order sapindales.

Hence option A is the correct answer.

The taxonomy triangle is an upright triangle which is divided into various levels, each of which represents a particular taxon. The taxa are arranged from bottom to top, in the order Kingdom (bottom-most), Phylum, Class, Order, Family, Genus, Species (top-most). The largest taxon thus occupies the bottom-most position, and the smallest taxon, the top-most

Hence option B is the correct answer.

In a double stranded DNA, the sequence of nucleotides is complementary to each other. That is, A pair with T and G pair with C. So, the sequence of nucleotide for 3 ‘ATTCGCTAT 5’ will be 5’TAAGCGATA 3’.

Hence option D is the correct answer.

Fungi are the microorganisms that are multicellular i.e their body structure consists of multiple cells. There are heterotrophic in nature and they get their food from other organisms. They are found in soil and are the decomposers of organic matter in the soil.

Hence option C is the correct answer.

The term "New Systematics” was coined by Julian Huxley in 1940. This classification takes into account the cytological, morphological, genetic, anatomical, paleontological and physiological characteristics of an organism.

Hence option C is the correct answer.

The specific action of an enzyme with a single substrate can be explained using a Lock and Key analogy first postulated in 1894 by Emil Fischer. In this analogy, the lock is the enzyme and the key is the substrate. Only the correctly sized key (substrate) fits into the key hole (active site) of the lock (enzyme).

Hence option A is the correct answer.

Lichen is a symbiotic association between algae and fungi. Algal component is called phycobiont and fungal component is called mycobiont.

Hence option B is the correct answer.

These are sugars which have Carbon molecules ranging from three to six.

As the terms indicate, Tri-3, Tetra-4, Penta-5, and Hexa-6.

Therefore, D is the answer

During telophase, the microtubules become even longer, and daughter nuclei begin to form at the two poles of the cell. Nuclear envelopes are formed, the nucleoli reappear, the chromatin of the chromosomes uncoil. Mitosis is now complete: one nucleus has divided into two genetically identical nuclei. Cytokinesis follows and involves the formation of a cleavage furrow, which pinches the cells into two.

Chromosomes, centrioles and spindle fibres are formed during prophase as a preparation for cell division.

Hence option D is the correct answer.

Carolus Linnaeus employed the binomial system of nomenclature in the first edition of his book 'Species Plantarum' in 1753. According to this, a plant name consists of two Latin words, the first of which is the generic name and the second is the specific epithet. Engler and Prantl are famous for their contributions in the field of plant taxonomy.

Hence option B is the correct answer.

Basidiocarp is the edible part of the mushroom

Hence option A is the correct answer.

Protists are microscopic organisms. The cell structure is eukaryotic. It is surrounded by plasmalemma (cell membrane). There may be an outer covering of pellicle, cuticle. shell or cellulose wall. It contains organelles like mitochondria, golgi complex, endoplasmic reticulum, 80s ribosomes, etc. Protista have both modes of nutrition, autotrophic as well as heterotrophic.

Nucleoid is the genetic material of prokaryotes. It is not present in a protista.

Hence option D is the correct answer.

Keratophilous fungi appear on nails, feathers and hair.

Hence option A is the correct answer.