Biology Test 133

In certain seeds, the dormancy of the seeds is due to the presence of certain germination inhibitors like coumarin, ferulic acid, abscisic acid, etc. These may be present in the endosperm, embryo, testa, or juice or pulp of the fruit.

Hence, the correct option is (D).

Cellulase is the enzyme that digests cell walls. Since plant cells have cell walls, so to digest the cell wall, cellulase is required. Animals do not have cell walls so, no cellulase required.

Lysozyme is a naturally occurring enzyme found in bodily secretions such as tears, saliva, and milk. It functions as an antimicrobial agent by cleaving the peptidoglycan component of bacterial cell walls, which leads to cell death.

Hence, the correct option is (B).

The highest level of the ecological hierarchy is the biosphere because it consists of the surface and atmosphere of earth or another planet. It cannot be an ecosystem because that consists of only biological communities, similarly, it cannot be biomes because a biome consists of many ecosystems but is a part of the biosphere, it cannot be a landscape because it is a land that does not have a fixed natural boundary. It is the highest level of organization. It is the global ecological system that consists of all the living organisms and other factors that supports life.

Hence, the correct option is (D).

Hence, the correct option is (D)

The thyroid cartilage is a hyaline cartilage structure that sits in front of the larynx and above the thyroid gland. The cartilage is composed of two halves, which meet in the middle at a peak called the laryngeal prominence, also called Adam's apple.

It is the largest of the nine cartilages that make up the laryngeal skeleton, the cartilage structure in and around the trachea that contains the larynx.

Hence, the correct option is (D).

Each ductus deferens, at the ampulla, joins the duct from the adjacent seminal vesicle (one of the accessory glands) to form a short ejaculatory duct. Each ejaculatory duct passes through the prostate gland and empties into the urethra.

Hence, the correct option is (C).

Because DNA consists of four different bases, and because there are three bases in a codon, and because 4 * 4 * 4 = 64, there are 64 possible patterns for a codon. Since there are only 20 possible amino acids, this means that there is some redundancy -- several different codons can encode for the same amino acid.

Hence, the correct option is (C).

When the cells are grown on a carbon source different than glucose, then polysaccharides are synthesized using a different pathway. Gluconeogenesis (abbreviated GNG) is a metabolic pathway that results in the generation of glucose from non-carbohydrate carbon substrates such as phosphoenolpyruvate (PEP).

Hence, the correct option is (D).

The flora of a particular area consists of its plant species, considered as a whole. An aggregate of all the species living in a particular ecosystem is called an ecological community. So, all the plants and animals species living in a particular area form the community of that area.
The plants found in a particular area are termed as flora area. The animals found in a particular area are tamed as fauna of that area. Endemic Species: Those species of plants arid animals which are found exclusively in a particular area are called endemic species to a zone, a state or a country.

Hence, the correct option is (B).

The coconut seed is especially well adapted to increasing its range by the method of ocean dispersal. The seed floats when its outer layers dry out. The buoyant coconuts drift on ocean currents and end up on tropical beaches where they germinate and take root.

Barochory is seed dispersal by gravity alone observed in coconuts and fruits with harder shells in which a plant's seeds fall beneath the parent plant. These seeds commonly have heavy seed dispersal syndromes. 

Hence, the correct option is (A).