Getting to know plants (Part-1)

Getting to know plants 

Q.1. Write the features of herbs, shrubs, trees, climbers  and creepers. Give some examples of each.
Ans. 

    i) Herbs:

  • A herb is a non-woody plant that has green and tender stem with few branches on.
  • It is usually short. 
  • Herbs have a variety of uses like adding flavor to food, providing medicine for diseases and some with spiritual touch.
  • Tulsi, rice, wheat, sunflowers, mint and lettuce are the examples of herbs.
    ii) Shrubs:
  • A shrub is taller than a herb and has stem branching out at its base.
  • The stems of shrubs are hard but not thick.
  • A common place where shrubs are grown is known as shrubbery.
  • Rose, jasmine, nerium and lemon plants are the exams of shrubs.
     iii) Trees:
  • These plants are very tall and have hard and thick brown stem.
  • The stems have branches in the upper part, much above the ground.
  • Trees serve us lot of benefits. They prevent soil erosion, maintain carbon dioxide content in the air, and provide us materials to make huts and to make furniture.
  • Mango, neem, banyan and coconut tree are the example of trees. 
      iv) Creepers:
  • Plants with thin, long and weak stems which cannot stand upright and spread on the ground are called creepers.
  • Pumpkin and watermelon are the examples of creepers.  
      v) Climbers:

  • Plants with thin, long and weak stems which take support on neighbouring structures and climb up are called climbers.

  • Money plant, Pea plant, grapes vine are the examples of climbers.

Q.2. How does a climber plant differ from a creeper plant?
Ans. The main difference between the climber plants and creepers plants is that climber plants have climbing organs like tendrils(on their stems or leaves) but creeper plants have no such climbing organs.

Q.3. Classify the following into herbs, shrubs and trees:
 Jasmine, Wheat, Rose, Palm, Henna, Carrot, Neem, Radish, Bougainvillea, Mustard, Paddy, Lemon, Sunflower, Cabbage, Eucalyptus, Coconut, Jamun.
Ans. 

Herbs

Shrubs

Trees

Mustard

Jasmine

Palm

Radish

Rose

Neem

Sunflower

Lemon

Mango

Carrot

Henna

Eucalyptus

Wheat

Bougainvillea

Coconut

Cabbage


Jamun

Paddy

 

 

Sunflower

 

 

Q.4. Classify the following into climbers and creepers:
strawberry plant, bitter gourd, Grape vine, Money plant, Pea plant
Ans.

Climbers

Creepers

Bitter gourd

Strawberry plant

Grape vine

Money plant

Pea plant

 

Popular posts from this blog

Sound (part -1) class 8

SOUND Q.1. What is sound? Ans. Sound is a form of energy, a sensation felt by our ears and makes us able to hear something. We hear many sounds around us like: sounds of talking, chirping of birds, ringing of bell, fluttering of clothes, machines etc. Q.2. What is the cause of sound? Ans. Vibration in an object produces sound. To and fro or back and forth motion of an object is called vibration. The energy required to make an object vibrate and produce sound is provided by some outside sources (like our hands, wind etc.). For example: We can feel vibrations by keeping our hand on our throat while speaking where vocal cords vibrate to produce sound. The sound of a ‘Dholak or tabla’ is produced by the vibrations of its stretched membrane on strucking. Q.3. Tabulate the Musical Instruments and their Vibrating Parts which vibrate to produce sound. Ans. S.No. Vibrating Part of Instrument Producing Sound Examples 1. Stretc...
Read more

Sound (part -3) class 8

Image
                                                                                                   SOUND Q.6.  Draw a well labeled diagram of human ear and explain its functioning? Ans. A human ear is divided into 3 parts: 1. Outer Ear : It is the only part of the ear that is visible to us. It consists of Pinna, Ear Canal and Ear Drum. The Pinna collects the sound waves and directs them to the ear canal. At the end of ear canal, there is ear drum which is slightly stretched membrane. When the vibrations strike the ear drum, it starts vibrating and transmits the sound to the middle ear. 2. Middle Ear : The middle ear is a cavity with three tiny important ear bones. These bones are M...
Read more

Sound (part -4) class 8

Image
  SOUND Characteristics of sound Q.8. Define the following terms: Frequency, time-period and amplitude. Ans. Frequency : The number of oscillations per second is called the frequency of oscillation. Frequency is expressed in hertz. Its symbol is Hz. Time-period : The time period is  the time taken by the oscillating object to complete oscillation. It is expressed in seconds.   Amplitude : the amount of maximum displacement of vibrating particles of the medium from their mean position is called the Amplitude of oscillation. It is also known as size of vibration. The SI unit of amplitude is  the meter. Q.9. A pendulum oscillates 40 times in 4 seconds. Find its time period and frequency. Q.10. The sound from a mosquito is produced when it vibrates its wings at an average rate of 500 vibrations per second. What is the time period of the vibration? Q .11. How c an we differentiate sounds on the basis of their am...
Read more