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Seeds are great travellers they can reach far and wide. Which of the following statements about seed dispersal is true? A. Animals eat apples and pass their seeds in their stool. B. Mangrove seeds disperse by water. C. Seeds of the orchid plant attach to animals using hooks. D. Soyabean seeds disperse by bursting.
Sue planted 4 times as many apple seeds as she planted orange seeds. 15% of the apple seeds grew into trees, and 10% of the orange seeds grew into trees. If a total of 420 apple trees and orange trees grew from the seeds, how many orange seeds did Sue plant?
A teacher along with his students is carrying out a study on germination of seeds. They take some dry seeds of different kinds and plant them in different physical conditions. They observe, measure and discuss the growth over a period of time. During the course of the activity, teacher asks questions which require various process skills. The questions asked by the teacher are given in column I Match these with the appropriate process skills   Column I   Column II (A) What are the differences between seeds of different type (i) communication (B) Why do you think some seeds are growing more quickly than others? (ii) predicting (C) Draw a diagram to depict the changes in the seeds (iii) observing (D) Based on your observation what do you think would happen if we double the amount of water (iv) hypothesising
In a horticulture experiment , 200 seeds were planted in plot I and 300 were planted in plot II. 57 percent of the seeds in plot I germinated and 42 percent of the seeds in plot II germinated, what percent of total numbers of planted seeds was germinated?
A teacher and her group of students, while carrying out an activity on seed germination, planted seeds in different conditions and found that dry seeds did not grow. The teacher posed the following questions to students: Why do you think these seeds are not growing? What can be done to make them grow? Which of the following skills is the teacher trying to develop among the students through these questions?
A teacher asked students to investigate the germination of seeds of different plants under various physical conditions and posed many questions to them during the process. Match the questions with the corresponding processing skill they intend to develop.   Questions   Process Skill A) Which plant is sturdier: the one left in sun or the one left in shade? (i) Hypothesizing B) Why do you think some seeds are growing? (ii) Observing C) How many seeds of each kind are growing? (iii) Classifying
What is the price range of ordinary wall clocks ? I. The price range of ordinary wrist watches of company X is Rs 400 to Rs 600. II. The price range of ordinary wall clocks of company X is 50 percent that of their ordinary watches.
Which of the following conditions do seeds need to germinate?
A teacher along with her class VII students is trying to understand how plants grow. They planted a number of tomato seeds at various depths and at various places in their school garden and took care of them. After some time, they observed that a few seeds began to develop as plants while others died out. The teacher asked the students to use their observations and think of the factors to due to which some seeds could not develop. Which process skill is likely to be developed through this exercise?
The seeds of certain plants fail to germinate, if they do not pass through the digestive tract of fruit-eating birds. This is due to