441. Which of the following is the largest part of the human brain?
1. Ribs
2. Cerebrum
3. Pons
4. Thalamus
Option “2” is correct
The cerebrum or cortex is the largest part of the human brain, associated with higher brain function such as thought and action. The cerebral cortex is divided into four sections, called “lobes”: the frontal lobe, parietal lobe, occipital lobe, and temporal lobe.
442. The auxiliary buds _____.
1. Grow endogenously from the pericycle
2. Arise endogenously from the main growing point
3. Is an embryonic shoot located in the axil of a leaf
4. Arise exogenously from the epidermis
Option “3” is correct The axillary bud is a bud that develops in the axil of a leaf of a plant. Axillary buds develop from the nodes which then becomes a new stem. Sometimes from axillary buds instead of branches (axillary shoot) also arise flowers, these buds are called floral buds.
443. Which non-flowering, spore bearing plants have roots?
1. Gymnosperms
2. Angiosperms
3. Ferns
4. None of these
Option “3” is correct Ferns are non-flowering, deciduous or evergreen perennial plants that grow in various sizes having roots. The fern’s life cycle continues when spores germinate in sunlit, moist environments.
444. Which of the following is an excretory organ of cockroach?
Option “1” is correct The excretory organ of cockroach is the malpighian tubules. It is found at the junction of the midgut and hind gut and are about 150 in number. They are fine, yellow coloured and branched threads present in bundles. They lie freely in the haemolymph.
445. Disorder in which concentration of glucose in the blood is high –
Option “1” is correct Hyperglycemia is an abnormally high blood glucose level. Hyperglycemia is a hallmark sign of diabetes.
446. Birds which swim in water have –
1. Webbed feet
2. Broad wings
3. Long beaks
4. Toes with claws
Option “1” is correct The primary use for webbed feet is paddling through water,as the bird pulls its foot backwards through the water, the toes spread apart, causing the webs to spread out and help bird to swim.
447. The scientific name of human being is?
1. Homo Nigrum
2. Melongena Sapiens
3. Homo Sapiens
4. Tigris Solanum
Option “3” is correct Homo sapiens (Latin: “wise person”) is the binomial nomenclature (also known as the scientific name) for the only extant human species.
448. Synapse gap is present between which of the following?
1. Two neurons
2. Brain and Spinal Cord
3. Two Kidneys
4. None of these
Option “1” is correct Synapse, also called neuronal junction, the site of transmission of electric nerve impulses between two nerve cells (neurons) or between a neuron and a gland or muscle cell (effector). A synaptic connection between a neuron and a muscle cell is called a neuromuscular junction.
449. Which organ has finger like outgrowths which are called as Villi (Singular Villus)?
1. Large Intestine
2. Bladder
3. Small Intestine
4. Stomach
Option “3” is correct Intestinal ville (singular villus) are small, finger-like projections that extend into the lumen of the small intestine. Each villus is approximately 0.5–1.6 mm in length (in humans), and has many microvilli projecting from the enterocytes of its epithelium which collectively form the striated or brush border.
450. Which of the following micro-organism causes diseases like polio and chicken pox?
1. Bacteria
2. Protozoa
3. Algae
4. Virus
Option “4” is correct Poliomyelitis, often called polio or infantile paralysis, is an infectious disease caused by the poliovirus. Chickenpox, also known as varicella, is a highly contagious disease caused by the initial infection with varicella zoster virus (VZV).
