Practice free Zoology NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
Which of the following substances is NOT typically eliminated by sebaceous glands?
The NCERT states, 'Sebaceous glands eliminate certain substances like sterols, hydrocarbons and waxes through sebum.' Urea is primarily eliminated by kidneys and in small amounts by sweat glands.
The yellow color of urine is due to:
While not explicitly stated in the provided text, general biological knowledge (consistent with NEET syllabus) attributes the yellow color of urine to urochrome, a pigment formed from the breakdown of hemoglobin.
Approximately how much urea is excreted by an adult human per day?
The NCERT states, 'On an average, 25-30 gm of urea is excreted out per day.'
Analysis of urine can help in the clinical diagnosis of:
The NCERT mentions, 'Analysis of urine helps in clinical diagnosis of many metabolic disorders as well as malfunctioning of the kidney.'
What is the nature of the urine formed in terms of color and fluidity?
The NCERT describes urine as 'a light yellow coloured watery fluid'.
The neural mechanisms causing micturition are collectively called:
The NCERT text states, 'The process of release of urine is called micturition and the neural mechanisms causing it is called the micturition reflex.'
Which of the following components of sweat is directly mentioned as an excretory waste product?
The NCERT states, 'Sweat produced by the sweat glands is a watery fluid containing NaCl, small amounts of urea, lactic acid, etc.' It further clarifies that sweat 'helps in the removal of some of the wastes mentioned above.'
The substances like bilirubin and biliverdin, secreted by the liver, ultimately pass out along with:
The NCERT states, 'Liver, the largest gland in our body, secretes bile-containing substances like bilirubin, biliverdin... Most of these substances ultimately pass out alongwith digestive wastes.'
Which of the following describes the body plan and organizational level of Phylum Annelida?
According to the NCERT text, Annelids exhibit organ-system level of body organisation and bilateral symmetry. They are triploblastic, metamerically segmented and coelomate animals.
The phylum name Annelida is derived from the Latin word 'annulus'. What does 'annulus' refer to in the context of these animals?
The NCERT text states: 'Their body surface is distinctly marked out into segments or metameres and, hence, the phylum name Annelida (Latin, annulus: little ring)'.
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