Activity 2 Date: 12 January 2023Question 1The root of an onion is a rapidly growing part of an onion. Many cells will be in differentstages of mitosis. A sample of an onion tip was stained and...

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Activity 2 Date: 12 January 2023 Question 1 The root of an onion is a rapidly growing part of an onion. Many cells will be in different stages of mitosis. A sample of an onion tip was stained and studied under a microscope. Various phases of mitosis were identified in the table below. Number of cells counted in 3 different slides Slide 1 Slide 2 Slide 3 Total Interphase a7 49 58 154 Prophase 5 7 18 30 Metaphase 2 4 1 7 Anaphase 10 10 2 22 Telophase 4 4 4 12 1.1 Which phase produces the: (a) Highest number of cells 0) (b) Lowest number of cells [4] 1.2 Calculate the percentage of cells produced during prophase. Show ALL calculations @ 2.1 The table illustrates the rate of water absorption by roots and the rate of transpiration by leaves. Time Rate of water absorption Rate of transpiration 06h00 15 05 08h00 15 | 2.0 10h00 32 | 45 12h00 a5 60 14h00 57 7a 16h00 76 93 18h00 8.0 I 55 2.1.1 Draw line graphs on the same set of axes to illustrate the results. (6) 2.1.2 By using the information in the table, indicate the time the sun rises. Motivate your answer. @ 13 2 Activity 03 Date: 13 January 2023 1.1 Diabetes insipidus (dilute urine) is a disease caused by a lack of ADH secretion into plasma. Scientists wanted to determine the effect of this disease on the volume of urine that a person produces per day. The investigation was carried out on 5 male participants over a period of 30 days. The males were of similar age and weight. Their average daily urine production was calculated and recorded in the table below. NOTE: Normal daily urine production is between 600 mt — 1800 mt. ‘Average volume of urine \nvisal produced in e/day 1 29 5 TF 17:56 © © ul 15000 6. ACER & GradelOweek.. [@ &% Life Sciences Grade 10 Activity 1 Date: 11 January 2023 Section A Question 1 1. The table below shows the results of an investigation in which the effect of temperature and light on the yield of tomatoes in twa greenhouses on a farm was investigated. TEMPERATURE AVERAGE YIELD OF TOMATOES PER PLANT (@c) (kg) LOW LIGHT LEVELS | HIGH LIGHT LEVELS 5 0.5 05 10 15 25 15 30 50 20 36 85 25 35 78 30 25 62 1.1 State TWO steps the investigator may have taken into consideration during the planning stage of the investigation. @ 1.2 Identity the: (a) Independent variables @ (b) Dependent variable 1) 1.3 Plot bar graphs on the same system of axes showing the results of the average yield of the tomatoes from 200C to 300C for both light levels. 6) 1.4 State ONE way in which the scientists could have improved the reliability of the investigation. 0) 2) Activity 2 Date: 12 January 2023 Question 1 “The root of an anion is a rapidly growing part of an onion. Many cells wil be in different stages of mitosis. A sample of an onion tip was stained and studied under a microscope. Various phases of mitosis were identified in the table below.