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.
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Select the correct combination from the given options
| Column$-I$ | Column$-II$ |
| $(a)$. Hypodermis in dicot stem | $(i)$ Absent |
| $(b)$. Pericycle in dicot stem | $(ii)$ Parenchymatous |
| $(c)$. Ground tissue in monocot stem | $(iii)$ Collenchymatous |
| $(d)$. Phloem parenchyma in monocot stem | $(iv)$ Sclerenchymatous |