1 Name four things for which plants compete.
2 Explain how the following help a plant survive.
a) fast growth
b) a deep, wide root system
c) brightly coloured flowers
3 a) What is a weed?
b) Explain why farmers do not want weeds amongst their crop plants.
4 Plants cannot move from place to place. Suggest why this could be a disadvantage for plants.
Answers
Explanation:
1. nutrients, sunlight, space, water.
2. faster the growth, better adaptation, more chances of dispersal. more strenght to abosrb the required things.
deep wide root system will absorb water easily and will help plant to survive better.
brightly coloured flowers will attract insects which will inturn pollinate the flower and thus fertilization is caused resulting in formation of seeds for dispersal.
3 . a. weed is an unwanted plant grown in the crop field which competes witb the crop and hampers it growth and development.
b. because they hamper their crop growth and affect the yield.
4 at the time of competition, if they are near a tree that is having broader leaves, deep roots widespread roots, they will be hidden under that tree and will be undernourished and can die also.
hope you are satisfied. learn more, grow higher good luck !
Answer:
1) Plants compete for the following 4 things :
a. Sunlight
b. Water
c. Mineral elements
d. Pollination
2)a)Ans:Fast growth helps a plant survive because they can trap sunlight
b) plants with a deep, wide root system are more likely to survive because they can absorb water and mineral elements from the soil
c) Brightly coloured flowers help a plant survive because insects are attracted to them for pollination so they have more chances of reproduction
Ans3a) plants growing in thw wrong place, especially in a field of cereal crop, are called weeds.
b) Farmers do not want weeds amongst their crop plants because they compete with the crop plants, take valuable nutrients from the soil and restrict the growth of crop
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