Doubtly
@Doubtly · Joined Feb 2021
- Answers
- 3,792
- Questions
- 7,092
- Upvotes received
- 431
- .Strobili or cones are found in: a) Marchantia b) Equisetum c) Salvinia d) Pteris b) Equisetum Explaination:: Strobilus is structure present on many land plant species consisting of sporangia bearing structure densely aggr... 1
- If the head of cockroach is removed, it may live for few days because: a) the head holds a small proportion of a nervous system while the rest is situated along the ventral part of its body. Explaination:: Nervo... 1
- The roots that originate from the base of the stem are c) Fibrous roots Explaination:: Roots that originate from the base of stem constitute the fibrous root system as seen in the monocots exampl... 1
- Name the plant growth regulators which upon spraying on sugarcane crop, increases the length of stem d) Gibberellin Explaination:: Gibberellin hormone regulates the growth, elongation of stem. It is able to promote the internode elongation b... 1
- Identify the wrong statement with reference to transport of oxygen. a) Higher H+ conc. in alveoli favours the formation of oxyhaemoglobin a) Higher H+ conc. in alveoli favours the formation of oxyhaemoglobin Explaination:: The Oxygen dissociation curve is highly useful in study... 1
- The plant parts which consist of two generations one within the other b) (a) and (d) Explaination:: (a) Pollen grain inside the anther (2n). (d) Embryosac inside ovule female gametophyte (2n). 2
- Identify the wrong statement with reference to immunity : a) Active immunity is quick and gives full response a) Active immunity is quick and gives full response Explaination:: Active immunity is slow and takes time to give its full effective respons... 1
- Which of the following pairs is of unicellular algae ? a) Anabaena and volvox b) Chlorella and spirulina Explaination:: Chlorella and spirulina are unicellular algae, rich in proteins is used as food supplement even by... 1
- Identify the correct statement with regard to G1 phase (Gap I) of interphase a) Cell is metabolically active, grows but does not replicate its DNA a) Cell is metabolically active, grows but does not replicate its DNA Explaination:: G1 Phase is metabolically active stage of cell cycle. D... 1
- The number of substrate level phosphorylations in one turn of citric acid cycle is : a) Two b) Three d) One Explaination: During Krebs' or citric acid cycle, succinyl-CoA is acted upon by enzyme succinyl-CoA synthetase to form succinate (a 4... 1
- Which of the following is put into Anaerobic sludge digester for further sewage treatment ? b) Activated sludge Explaination:: Major portion of activated sludge is pumped into large tanks called anaerobic sludge digesters. So, here... 1
- Ray florets have : a) Hypogynous ovary b) Half inferior ovary c) Inferior ovary d) Superior ovary c) Inferior ovary Explaination:: Ray florets have inferior ovary and the reason is that the other parts of the flower are attached above the... 1
- Identify the correct statement with reference to human digestive system. a) Ileum is a highly coiled part a) Ileum is a highly coiled part Explaination: a) Small intestine is distinguishable into three regions, a ‘U’ shaped duodenum, a long coile... 1
- The enzyme enterokinase helps in conversion of : a) Caseinogen into casein d) Trypsinogen into trypsin Explaination:: Trypsinogen is present in inactive form in pancreatic juice. So enterokinase enzyme converts inac... 1
- The QRS complex in a standard ECG represents : a) Depolarisation of ventricles a) Depolarisation of ventricles Explaination:: The QRS complex represents the depolarisation of the ventricles, which initiates the ventricu... 1
- The sequence that controls the copy number of the linked DNA in the vector, is termed a) d) Ori site Explaination:: Origin of replication (ori): This is a sequence from where replication starts and any piece of DNA when linked to... 1
- Match the following columns and select the correct option Column I Column II (a) Placenta (i) Androgens (b) Zona pellucida (ii) Human Chorionic 3}(a)→(ii),(b)→(iii),(c)→(iv),(d)→(i) Explaination:: (a) Placenta also acts as an endocrine tissue and produces several hormones like human... 1
- Presence of which of the following conditions in urine are indicative of Diabetes Mellitus ? a) Ketonuria and Glycosuria b) Renal calculi and Hyperglycaemia a) Ketonuria and Glycosuria Explaination:: Diabetes mellitus leads to a complex disorder called prolonged hyperglycemia, which is associated... 1