1 a 有叶绿体,能进行光合作用························ P
1 b 无叶绿体,不能进行光合作用······················· 2
2 a 无脊椎骨······························· Q
2 b 有脊椎骨······························· 3
3 a 体温恒定,外被羽毛························· R
3 b 体温不恒定,体表裸露························ S
请选择上述五种生物中的四种填在后面四个空格:PQRS
茎、叶 |
根 |
花 |
果实 |
种子 |
|
A |
+ |
+ |
- |
- |
- |
B |
+ |
- |
- |
- |
- |
C |
- |
- |
- |
- |
- |
D |
+ |
+ |
- |
- |
+ |
E |
+ |
+ |
+ |
+ |
+ |
进行繁殖。