Tag: botany

Quizzes (264) Questions (5276)

Questions Related to botany

Multiple choice botany strategies for enhancement in food production balanced diet food production and microbes plant breeding for food production

Which one possesses highest protein content

  1. Spirulina

  2. Glycine max

  3. Arachis hypogea

  4. Pisum sativum
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Spirulina is a cyanobacterium known for having an exceptionally high protein content, often ranging from 60 to 70 percent of its dry weight, which is significantly higher than common legumes like peas or peanuts.

Multiple choice botany strategies for enhancement in food production balanced diet food production and microbes plant breeding for food production

Chemosynthesis is BEST defined as _________________.

  1. Synthesis of food by chemical means

  2. Synthesis of a chemical compound

  3. Synthesis of food with energy obtained in a chemical reaction

  4. Absorption of food material in various parts of the body
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Chemosynthesis is the biological conversion of carbon containing compounds and other nutrients into organic matter using the oxidation of inorganic molecules or methane as a source of energy, rather than sunlight. Thus, it is best defined as the synthesis of food with energy obtained in a chemical reaction.

Multiple choice botany strategies for enhancement in food production balanced diet food production and microbes plant breeding for food production

Match List I with List II and select the correct answer.

List-I List-II
a. Gene libraries $1$. Production of food
b. Single cell protein(SCP) $2$. Nif genes
c. Agriculture cereal crop $3$. Chromosome mapping
d. c-DNA $4$. Gene bank
  1. A-$2$, B-$3$, C-$1$, D-$4$
  2. A-$4$, B-$1$, C-$2$, D-$3$
  3. A-$4$, B-$2$, C-$1$, D-$3$
  4. A-$3$, B-$2$, C-$1$, D-$4$
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice botany strategies for enhancement in food production balanced diet food production and microbes plant breeding for food production

Which non-toxic, fast growing cyanobacterium is cultivated in tanks as a protein-rich animal feed?

  1. Stigonema

  2. Spirulina

  3. Nostoc

  4. Oscillatoria
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Spirulina represents a biomass of cyanobacteria (blue-green algae) that can be consumed by humans and other animals. The two species are Arthrospira platensis and A. maxima. Cultivated worldwide, Arthrospira is used as a dietary supplement or whole food. It is also used as a feed supplement in the aquaculture, aquarium, and poultry industries. Spirulina was found in abundance at Lake Texcoco by French researchers in the 1960s, but no reference to its use was made by the Aztecs as a daily food source after the 16th century, probably due to the draining of the surrounding lakes for agriculture and urban development. As an ecologically sound, nutrient-rich, dietary supplement, spirulina is being investigated to address food security and malnutrition, and as dietary support in long-term space flight or Mars missions. Its interest for food security is for lower land and water needs to produce protein and energy than required for livestock as meat sources.
So the correct option is 'spirulina'.
Multiple choice botany strategies for enhancement in food production balanced diet food production and microbes plant breeding for food production

Which is taken as protein supplement in diet?

  1. Chlorella

  2. Spirulina

  3. Both A and B

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Chlorella is a type of algae that grows in fresh water. The whole plant is used to make nutritional supplements and medicine. It is processed and made into tablets and liquid extracts. These extracts contain "chlorella growth factor," which is described as a water-soluble extract of chlorella containing chemicals including amino acids, peptides, proteins, vitamins, sugars, and nucleic acids. As a medicine, chlorella is used for preventing cancer, reducing radiation treatment side effects, stimulating the immune system, improving response to flu vaccine, increasing white blood cell counts (especially in people with HIV infection or cancer), preventing colds, protecting the body against toxic metals such as lead and mercury, and slowing the aging process.
Chlorella is also used to increase good bacteria in the intestine in order to improve digestion; and to help treat ulcers, colitis, Crohn's disease, and diverticulosis.
Some people also use chlorella for the prevention of stress-related ulcers; treatment of constipation, bad breath, and hypertension; as an antioxidant; to reduce cholesterol; to increase energy; to detoxify the body; and as a source of magnesium to promote mental health, relieve premenstrual syndrome (PMS), and reduce asthma attacks. It is also used for fibromyalgia.
Chlorella is applied to the skin for treating skin ulcers, rashes caused by radiation treatment, and a sexually transmitted disease called trichomoniasis. Chlorella is a good source of protein, fats, carbohydrates, fiber, chlorophyll, vitamins, and minerals. The cell wall of chlorella must be broken down before people can digest it.

Spirulina is a cyanobacterium that can be consumed by humans and other animals as a protein supplement.

Multiple choice botany micro - organism fungi: benefits and harmful effects useful and harmful fungi uses of fungi

The importance of fungi in food web lies in the fact that

  1. They are photoautotrophs.

  2. They have prokaryotic cell structure.

  3. They serve as key decomposers of dead organic matter.

  4. They generate antibiotics that kill competing plants and animals.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • Fungus are an important part of the saprophytic food chain.
  • They decompose the organic waste left by other animals and convert it into inorganic components that can be again absorbed by the plants ie the organisms of the first trophic level of the food chain and enter the food chain again.
  • So, the correct answer is 'They serve as key decomposers of dead organic matter'.
Multiple choice botany micro - organism fungi: benefits and harmful effects useful and harmful fungi uses of fungi

Calcium gluconate is widely used as a source of calcium for infants. It is prepared from

  1. Rhizopus

  2. Aspergillus

  3. Mucor

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Aspergillus niger is filamentous fungi that cause disease on vegetables and fruits called black mould. These organisms are used in fermentation processes to obtain citric acid and gluconic acid that are of commercial importance. It is also used in the manufacture of calcium gluconate. This compound is given to infants from hypocalcemia. Thus, the correct answer is option B.

Multiple choice botany plant physiology mineral absorption transport of food, water and minerals mineral transport theories of translocation transport in the phloem of plants

Which of the tissue is more important for translocation of sucrose?

  1. Xylem

  2. Phloem

  3. Both of the above

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Translocation of organic nutrients from the region of source or supply to the region of sink or utilisation is mostly in the form of sucrose. Phloem (sieve tubes or sieve cells) is the pathway for this translocation, as found put by stem girdling, sieve tube puncturing, radioautography and chemical analysis of sieve tube sap.