Tag: evs

Questions Related to evs

Sense of smell helps you to get the complete taste of food.

evs science of kitchen sense of touch, smell and taste types of taste components and importance of food

  1. True

  2. False

Show answer
Correct Option: A
Explanation:
  • Specific chemicals in solution pass into the taste bud through the taste pore to come in contact with the protein receptor sites on the microvilli of the gustatory receptor cells.
  • The latter set up nerve impulses in the sensory nerve fibers. The nerve fibers transmit the impulses to the taste center in the brain where the sensation of taste arises.
  • The facial nerve serves the anterior two-thirds of the tongue, the glossopharyngeal nerve serves the posterior one-third of the tongue. 

So, the correct answer is 'True'.

The taste of jaggery is  

evs science of kitchen sense of touch, smell and taste types of taste components and importance of food

  1. Sour

  2. Bitter

  3. Sweet

  4. Salty

Show answer
Correct Option: C
Explanation:
A. Sour occupies the sides of the tongue and detects acidity like in lemon, orange, grape.
B. Bitter occupies the base of the tongue and detects unpleasantness like in caffeine, nicotine, bitter gourd.
C. Sweet occupies tip of the tongue and detects sugars like jaggery.
D. Salty occupies tips and sides of the tongue and detects sodium chloride. 
So, the correct answer is 'Sweet'.

Tomato is a juicy fruit which tastes sweet and sour.

evs science of kitchen sense of touch, smell and taste types of taste components and importance of food

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

  • Tomato juice's earthy flavour at normal pressure, with cabin pressure it becomes sweeter, fruity, even. 
  • Additionally, tomatoes are rich in flavour known as umami, a taste that is thought of by most as very savoury and pleasant. Hence, Tomato is a juicy fruit which tastes sweet and sour.
So, the correct answer is 'true'.

Germination of the seed is promoted by.

evs developmental journey of seed seed to plants germination of seeds life within the seed introduction to plant organs and germination

  1. Green light

  2. Red light

  3. Blue light

  4. Infra red light

Show answer
Correct Option: A

Renu soaked some moong seeds overnight in water. Next day, after draining out the water, she wrapped the seeds in a wet cloth. After a day, she observed small white structures growing out of the seeds. These small white structures will develop into

evs developmental journey of seed seed to plants germination of seeds life within the seed introduction to plant organs and germination

  1. Stems

  2. Roots

  3. Leaves

  4. Flowers

Show answer
Correct Option: B
Explanation:

Sprouts develop in the pulses or grain under humid environment with adequate amount of water fasten the process of germination and Roots comes out.

So the correct option is 'Roots'.

Which of the following is a step which is involved in seed germination?

evs developmental journey of seed seed to plants germination of seeds life within the seed introduction to plant organs and germination

  1. Absorption of Water

  2. Absorption of Carbon Dioxide

  3. Absorption of Light

  4. All the above

Show answer
Correct Option: A
Explanation:

Germination is the process of seeds developing into new plants. First, environmental conditions must trigger the seed to grow.

  1.  When water is plentiful, the seed fills with water in a process called imbibition. The water activates special proteins, called enzymes, that begin the process of seed growth. 
  2.  The seed grows a root to access water underground. 
  3. The shoot appears above ground. 

The seed sends a shoot towards the surface, where it will grow leaves to make food that provides energy. 
The leaves continue to grow towards the light source in a process called photomorphogenesis.
So the correct option is 'Absorption of Water'

Sprouting of potatoes while in storage can be prevented by _________________.

evs developmental journey of seed seed to plants germination of seeds life within the seed introduction to plant organs and germination

  1. Treatment with low concentrations of urea

  2. Treatment with low concentrations of naphthalene acetic acid

  3. Treatment with low concentrations of nicotinamide

  4. Exposure of sunlight and storage at low temperatures

Show answer
Correct Option: A

In germinating oil seeds beta-oxidation of free fatty acids takes place in the _____________.

evs developmental journey of seed seed to plants germination of seeds life within the seed introduction to plant organs and germination

  1. Oleosomes

  2. Glyoxysomes

  3. Mitochondria

  4. Lysosomes

Show answer
Correct Option: A

State whether the following statements are true or false.
Oxygen is not necessary for seed germination;

evs developmental journey of seed seed to plants germination of seeds life within the seed introduction to plant organs and germination

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

Aerobic respiration is respiration which occurs in the presence of oxygen. Aeration is the main phenomenon which helps in the germination of seed. Oxygen is absorbed by the cells which later gets transformed into energy for future uses. For better germination of seeds require oxygen, water, sunlight, and temperature.

So, the correct statement is 'True'.

Choose the correct answer from the alternatives given.
Seed germination is over when the:

evs developmental journey of seed seed to plants germination of seeds life within the seed introduction to plant organs and germination

  1. embryo sporophyte absorbs water

  2. embryo sporophyte resumes growth

  3. primary root pokes out of the seed coat

  4. cotyledons unfurl

Show answer
Correct Option: C
Explanation:

In summary, seed germination is the process of a fertilized plant ovary, or seed, developing into a mature plant. Seed germination starts with imbibition when the seed takes in water from the soil. This triggers root growth to allow the seed to get more water.

So, the correct option is 'primary root pokes out of the seed coat'.