A jawless fish, which lays eggs in fresh water and whose ammocoetes larvae after metamorphosis return to the ocean is:
Options
(a) myxine (b) Neomyxine (c) Petromyzon (d) Eptatretus
Correct Answer:
Petromyzon
Explanation: […]
The structures that are formed by stacking of organized flattened membranous sacs in the chloroplasts are:
Options
(a) Grana (b) Stroma lamellae (c) Stroma (d) Cristae
Correct Answer:
Grana
Explanation:
In chloroplast which are […]
The oxygen evolved during photosynthes is comes from water molecules. Which one of the following pairs of elements is involved in this reaction?
Options
(a) Manganese and Potassium (b) Magnesium and Molybdenum (c) […]
In photosynthesis the light-independent reactions take place at :
Options
(a) Photosystem-I (b) Photosystem-II (c) Stromal matrix (d) Thylakoid lumen
Correct Answer:
Stromal matrix
Explanation:
Stromal matrix contains a number of flattened membranous sacs […]
Chromatophores take part in:
Options
(a) Growth (b) Movement (c) Respiration (d) Photosynthesis
Correct Answer:
Photosynthesis
Explanation:
Chromatophores play an important role in the process of photosynthesis. They contain pigments and are found in […]
Anoxygenic photosynthesis is characteristic of:
Options
(a) Rhodospirillum (b) Spirogyra (c) Chlamydomonas (d) Ulva
Correct Answer:
Rhodospirillum
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
Which one of the following hormones though synthesised else where is stored and released by the mastergland ?
Options
(a) Luteinizing hormone (b) Prolactin (c) Melanocyte stimulating hormone (d) Antidiuretic hormone
Correct Answer: […]
Which one of the following hormones is not involved in sugar metabolism ?
Options
(a) Aldosterone (b) Insulin (c) Glucagon (d) Cortisone
Correct Answer:
Aldosterone
Explanation:
No explanation available. Be the first to […]
Which of the following regions of the brain is incorrectly paired with its function?
Options
(a) Cerebellum –language comprehension (b) Corpus callosum – communication between the left and right cerebral cortices (c) Cerebrum […]
Stimulation of a muscle fiber by a motor neuron occurs at:
Options
(a) the neuromuscular junction (b) the transverse tubules (c) the myofibril (d) the sacroplasmic reticulum
Correct Answer:
the neuromuscular junction
Explanation: […]
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