Chapter 1: Nutrition – Food Supplying System — Online MCQ Test
BIOLOGY · CLASS 10th · Telangana State Board
Practice Chapter 1: Nutrition – Food Supplying System with a free chapter-wise online MCQ test.
This chapter covers: This introductory chapter explores how organisms obtain and utilize nutrients for energy growth and maintenance. It contrasts autotrophic nutrition (autotrophs making their own foo....
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Chapter 1: Nutrition – Food Supplying System — Important Questions & Answers
Which of the following organisms is classified as an autotroph?
- A. Green plants
- B. Lions
- C. Fungi
- D. Bacteria that feed on dead matter
Answer: A. Green plants
Green plants are autotrophs because they synthesize their own food through photosynthesis using sunlight, water, and carbon dioxide.
Green plants are autotrophs because they synthesize their own food through photosynthesis using sunlight, water, and carbon dioxide.
What is the primary pigment responsible for capturing light energy in photosynthesis?
- A. Carotenoid
- B. Chlorophyll
- C. Xanthophyll
- D. Anthocyanin
Answer: B. Chlorophyll
Chlorophyll is the main photosynthetic pigment that absorbs light energy, particularly in the blue and red wavelengths of the light spectrum.
Chlorophyll is the main photosynthetic pigment that absorbs light energy, particularly in the blue and red wavelengths of the light spectrum.
Which part of the human digestive system is primarily responsible for protein digestion?
- A. Mouth
- B. Esophagus
- C. Stomach
- D. Small intestine only
Answer: C. Stomach
The stomach secretes pepsin and hydrochloric acid (HCl) which initiate protein digestion, though it continues in the small intestine with trypsin.
The stomach secretes pepsin and hydrochloric acid (HCl) which initiate protein digestion, though it continues in the small intestine with trypsin.
Compare the nutritional strategies of plants and animals. Which statement best describes a key difference?
- A. Plants are heterotrophs while animals are autotrophs
- B. Plants synthesize their own food using sunlight, while animals must consume organic matter
- C. Animals can photosynthesize if they have sufficient chlorophyll
- D. Both use the same process to obtain energy from food
Answer: B. Plants synthesize their own food using sunlight, while animals must consume organic matter
Plants are autotrophs that produce their own glucose through photosynthesis, whereas animals are heterotrophs that must consume pre-made organic compounds for nutrition.
Plants are autotrophs that produce their own glucose through photosynthesis, whereas animals are heterotrophs that must consume pre-made organic compounds for nutrition.
A student observes that certain bacteria can synthesize their own food but do not contain chlorophyll. Which type of nutrition do these bacteria exhibit, and what does this reveal about the classification of nutrition types?
- A. Heterotrophic nutrition; this proves all autotrophs must have chlorophyll
- B. Autotrophic nutrition (chemosynthesis); this shows that autotrophy includes both photosynthetic and non-photosynthetic organisms
- C. Saprophytic nutrition; bacteria cannot be true autotrophs
- D. Parasitic nutrition; they depend on other organisms
Answer: B. Autotrophic nutrition (chemosynthesis); this shows that autotrophy includes both photosynthetic and non-photosynthetic organisms
Some bacteria use chemosynthesis to produce their own food without chlorophyll, demonstrating that autotrophy encompasses both photosynthetic and chemosynthetic organisms.
Some bacteria use chemosynthesis to produce their own food without chlorophyll, demonstrating that autotrophy encompasses both photosynthetic and chemosynthetic organisms.