Ap Biology Chapter 9 Study Guide

Direction (1-2): Which of the two conclusions can be concluded on the basis of given statements ? 1. Statements : I. Some parrots are scissors . II. Some scissors are not combs Conclusions: I. Some scissors are parrots. II. Some combs are parrots. (A) Only I conclusion follows (B) Only II conclusion follows (C) Either I or II follows (D) Neither I nor II follows (E) Both I and II follows Solution:-

2. Statements: I. All flowers are candles. II. All lanterns are candles Conclusions: I. Some flowers are lanterns. II. Some candles are lanterns. (A) Only I conclusion follows (B) Only II conclusion follows (C) Either I or II follows (D) Neither I nor II follows (E) Both I and II

54 50 84 188 496 1456 42 (A) (B) (C) (D) (E) What will come in the place of (D) ? (A) 304 (B) 286 (C) 293 (D) 281 (E) 301 Solution:-

Similarly,

Directions: (6-10): Study the following table carefully answer the questions given below : A factory was opened in 1994 with certain initial strengths in different units as shown in the table. At the beginning of the subsequent years some of the workers left and some new workers were deployed. No worker left or joined in between. Details are given in the table given below. Study it carefully and answer the questions that follow. Note : L = Left, J = Joined 6. What was the strength of Unit “B’ in 1998 ? (A) 142 (B) 125 (C) 159 (D) 207 (E) None of these Solution:- Required strength

7. In 1999 the strength of workers was maximum in which unit ? (A) E (B) D (C) C (D) B (E) A Solution:- Strength of workers in 1999

A = Similarly strength of B = 146 Similarly strength of C = 142 Similarly strength of D = 132 Similarly strength of E = 125

A is required Ans. 8. The strength of workers in unit C in 1996 is approximately what percent of strength in unit E in 1997