मराठी
महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता १० वी

If a Piece of Bread is Kept in a Container in Moist Place for 2 – 3 Days, 1. What Will You See? 2. Write Scientific Name and a Character of the Organism You May Observe. - Science and Technology 2

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प्रश्न

If a piece of bread is kept in a container in moist place for 2 – 3 days,
1. What will you see?
2. Write scientific name and a character of the organism you may observe.

टीपा लिहा

उत्तर

  1. White fibres will be seen growing on piece of bread.
  2. Scientific name is Rhizopus stolonifer and a character of the organism is striations.
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2018-2019 (March) Balbharati Model Question Paper Set 2

संबंधित प्रश्‍न

The following is an antibiotic.


Give scientific reasons.

Microbial enzymes are used instead of chemical catalysts in chemical industry.


Answer the following.
What is role of microbes in compost production?


Give reasons.

Bread 'rises' during baking.


__________ is a powerful antibiotic against treatment of tuberculosis.


Lactic acid : To impart acidity : : Beta carotene : _____________________


Gaseous fuel : Coal gas : : ___________ : Coal


Why does the process of dirt removal occur in detergents even at low temperature?


Which microbes convert uranium to its insoluble salts?


Write a short note.

Microbial Enzymes


Write a short note.

Bio-fuels


Write a short note.

Land filling sites


Explain – Importance of microbes in sewage (water) treatment in cities.


Which fuels do we get from microbes?


Explain products made from microbes and their uses.


Complete the paragraph by selecting the appropriate option in parentheses.

(energy, microbial, erosion-proof, reused, purification, environmentally friendly)

Nowadays, instead of chemical catalysts, _______ enzymes are used in the chemical industry. These enzymes are active at low temperature, pH and pressure; due to which _______ is saved and _______ instruments are also not necessary. Enzymes carry out specific processes; hence unnecessary by-products are not formed due to which expenses on _______ are minimised. In case of microbial enzymatic reactions elimination and decomposition of waste material is avoided and enzymes can be _______ Hence, such enzymes are _______.


Microorganism can be seen with the help of a _______.


Match the microorganisms given in the Column A to the group to which they belong in Column B.

Column A Column B
(a) Lactobacillus (i) Algae
(b) Aspergillus (ii) Protozoa
(c) Spirogyra (iii) Fungi
(d) Paramecium (iv) Bacteria

Match the following

i. Amoeba a. Autotrophs
ii. Algae b. Gills
iii. Agaricus c. Biocontrol
iv. Bt cotton d. Sporulation

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