MCQ
How many organisms in the list given below show autrophic nutrition method? Lactobacillus, Nostoc, Chara, wolffia, Nistrosomonas, Nitrobacter, porphyra Streptococus, Saccharomyces, Trypanosoma,
- AFour
- BFive
- ✓Six
- DThree
source.
From the list, autotrophic bacteria include a total of six as Chara, Nostoc, Porphyra, Wolfia, Nitrosomonas, Nitrobacter. Of these Chara, Nostoc, Porphyra, Wolfia is photoautotrophs while Nitrosomonas, Nitrobacter are chemoautotrophs. The other four (Lactobacillus, Streptomyces, Saccharomyces, Trypanosoma) are heterotrophs meaning they utilize organic compounds as a source of food.
Thus, the correct answer is option C.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$II.$ Increased partial pressure of $CO _{2}$
$III.$ Increased partial pressure of $H^{+i i}$
$IV.$ Decreased partial pressure of $O_{2}$
All the above situations favours the dissociation of oxyhaemoglobin except
$(I)$ Malpighian corpuscles, $PCT$ and $DCT$ the nephron are situated in medulla of the kidney
$(II)$ The loop of henle dips into medulla.
$(III)$ In juxta medullary nephrons, the loop of henle is too short and extends very little into the medulla.
$(IV)$ Vasa recta is absent or highly reduced in cortical nephrons.