21. Phototropins specifically will cause stems to bend towards light, and stomata to open. 22. The leaves have conspicuous midribs and are amphistomatic with stomata present on both sides. 23. Like other hornworts, its surface has stomata . 24. Vascular-wilt fungi compromise the water transport and photosynthesis by inducing stomata closure. 25. It has a clearly contrasting neck with numerous large, single-celled stomata . 26. Stems have stomata and the formation of bark takes place later than in normal trees. 27. It is also the determining factor for how plants regulate the aperture of their stomata . 28. Leaves are green both on the top and bottom and have stomata on both sides. 29. No stomata are present on the leaves. 30. The leaves are bright green on both sides of the shoots with only inconspicuous stomata .
