Biology MCQs

Notes:
The cecum or caecum is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is that organ in herbivorous animals, which helps in digestion of starch through bacteria.

Notes:
Myosins refers to a superfamily of motor proteins known for their roles in muscle contraction and other motility processes in eukaryotes. These proteins are basically specialized motor machines that convert the cellular free energy to mechanical work. They depend on ATPs for actin based motility.

Notes:
Ikki disease is found in ground nut. Groundnut is taxonomically classified as Arachis hypogaea, is a legume crop grown mainly for its edible seeds. It is widely grown in the tropics and subtropics.

Notes:
Sarcina is a genus of Gram-positive cocci bacteria in the family Clostridiaceae. They are gram positive bacteria which are found in water and soil and thrive in low pH environment. They are arranged in cubical pockets.

Notes:
Pigeons have become useful bioindicators for lead pollution due to their widespread presence in cities and their ability to accumulate and retain heavy metals, including lead, in their tissues. Researchers have found that the feathers, blood, and tissues of pigeons can provide valuable information about the levels of lead exposure in the environment.

Lead pollution in cities can come from various sources, including lead-based paints, industrial emissions, and traffic-related sources. Pigeons, being urban birds, are exposed to these sources and can accumulate lead over time. By studying lead levels in pigeon populations, scientists can gain insights into the extent of lead pollution in a city and assess its potential risks to both wildlife and humans.

Notes:
Xerophytes can tolerate and stand against drought conditions. They are able to survive in an environment with little liquid water, such as a desert or an ice- or snow-covered region in the Alps or the Arctic.

Notes:
Taenia is a taxonomic rank of tapeworm (helminth) that includes some main parasites of livestock. There are more than 100 species of Taenia. Taenia is responsible for taeniasis and cysticercosis in humans. They are morphologically characterized by a ribbon like body composed of a series of segments called proglottids.

Notes:
At least one of the spores develop into haploid female gametophytes thus making the ratio of functional and degenerate megaspores is 1:3. Out of the four, three megaspores degenrate.

Notes:
Information from one neuron flows to another neuron across a synapse. The synapse contains a small gap separating neurons. The synapse consists of: a presynaptic ending that contains neurotransmitters, mitochondria and other cell organelles.

Notes:
A specific epithet is the second part of a species name in binomial nomenclature in any branch of biology. In botany, the second part of a botanical name. Specific epithet (zoology), also called the specific name, meaning the second part of the species name or binomen.